The Runner's Fuel Guide
carb loading, race-morning food, in-race carbs and sodium, hydration, recovery, caffeine and supplements - written for indian runners, with indian food, for indian conditions.
by punerunners · pune's running club for every pace · general education, not medical advice
01 · How to use this guidehow do i use a runner nutrition guide?
This is general education from published sports-nutrition research - the same sources elite programs use - translated into indian kitchens and indian weather. Not medical advice, and it cannot see your blood reports: with diabetes, kidney, heart or blood-pressure conditions, or a history of disordered eating, talk to your doctor first.
Every number is a starting range, not a prescription - the sweat test (section 06) and practising on long runs turn ranges into your numbers.
brand new to running? first 5k/10k or just a few months in? you need nothing but normal food and water: 3 proper meals, a small pre-run snack if hungry, water on runs over ~45-60 min, normal breakfast 2-3 h before race day, no fuel during a 5k/10k. graduate to the rest of this guide when runs cross 75-90 min, you sign up for a half or longer, or you add gym to running. consistency beats every fuelling trick ever published. and the one rule above all rules: nothing new on race day - race only with food, drink, gels and caffeine your gut has already met in training.
02 · The everyday platewhat should a runner eat every day in india?
race fuelling only works on top of a decent training diet. the good news: the indian thali is already 80% of the way there.
the training-week thali
On normal training weeks, build most meals the way an indian plate already works: a big carb base (roti, rice, poha, idli, dosa, paratha), a protein (dal, paneer, curd, eggs, chicken, fish, soy), vegetables, and a little fat. You do not need imported health food. You need enough total food.
| nutrient | daily target for runners | indian sources |
|---|---|---|
| carbs | 5-7 g/kg on normal days; 7-10 g/kg in heavy marathon training | rice, roti, poha, upma, idli, dosa, potato, banana, fruit |
| protein | ~1.2-1.6 g/kg/day for recreational training (the master table, below), spread across meals | dal, chana, rajma, paneer, curd, milk, soy chunks, eggs, chicken, fish |
| fat | the rest - keep fried food occasional, not daily | ghee, nuts, seeds, oil in cooking |
veg runners, two honest flags. iron and B12 are the two nutrients most often low in vegetarian runners, and low iron quietly wrecks endurance. don't guess and don't self-prescribe iron pills (too much iron is harmful). if fatigue or slowing times show up, talk to your doctor about a blood test before reaching for a supplement - and supplement only if the report and your doctor say so.
protein without a supplement shop
A 60 kg runner needs roughly 70-95 g protein a day. That is very reachable: 2 eggs (12 g) + a katori of dal (7 g) + 100 g paneer (18 g) + a glass of milk (8 g) + curd (5 g) + rajma or chana at dinner (12-15 g) + the protein inside your rice, roti and vegetables (20-25 g) lands you there. Whey is convenience, not necessity.
how to eat your protein: the everyday indian way
ordinary food, an ordinary kitchen, about 45 minutes on sunday. every figure is an estimate (~) from IFCT 2017, USDA FoodData Central and pack labels.
the anchor foods
| staple | protein | why it is here |
|---|---|---|
| soya chunks | ~52 g / 100 g dry | the heavy lifter. 50 g dry is about 26 g protein - about four katoris of dal. prep per the pack. |
| eggs | ~6.3 g / egg | boil 8-10 on sunday; hard-boiled eggs keep about a week in the fridge. |
| milk & curd | ~3.2-3.4 g / 100 ml | set curd from tonight's milk - it becomes dahi, raita and lassi. |
| roasted chana | ~19 g / 100 g | the desk jar: 30 g is about 6 g. ground up it becomes sattu (~22 g per 100 g). |
| peanut butter & peanuts | ~26 g / 100 g | the calorie lever when the rest of the day was too lean. calorie-dense, so weigh them. |
| rolled oats | ~12 g / 100 g | the overnight-oats base. |
five simple meals
the five meals of day plan 01 below - each one built around an anchor.
| meal | protein |
|---|---|
| overnight oats jar (oats, milk, curd, peanut butter) | ~22 g |
| 2 boiled eggs + 30 g roasted chana | ~18 g |
| soya chunk pulao with veg + curd | ~37 g |
| milk, peanuts and a guava | ~16 g |
| dal, 2 rotis, sabzi, curd | ~21 g |
about these day plans: they are examples of how meals can be structured from accessible foods. Calorie and protein totals are estimates, not personalised prescriptions - your requirements depend on body size, training load, goals, health status and daily activity, so adjust portion sizes and food choices accordingly. A higher-protein meal plan is not automatically better: adequate total energy and carbohydrate intake matter just as much for endurance performance and recovery.
| day plan 01 · veg + eggs, whole foods | protein |
|---|---|
| overnight oats jar | ~22 g |
| 2 boiled eggs + roasted chana 30 g | ~18 g |
| soya chunk pulao with veg | ~37 g |
| milk, peanuts and a guava | ~16 g |
| dal, 2 rotis, sabzi, curd | ~21 g |
| total | ~114 g |
| day plan 02 · pure vegetarian, no eggs | protein |
|---|---|
| overnight oats jar | ~22 g |
| roasted chana 50 g + curd 100 g | ~13 g |
| soya chunk pulao with veg | ~43 g |
| high-protein tin paneer 50 g, 1 roti, guava | ~19 g |
| dal, 2 rotis, sabzi, curd | ~23 g |
| total | ~120 g |
| day plan 03 · the convenience stack | protein |
|---|---|
| high-protein milk + high-protein muesli 40 g | ~35 g |
| soya pulao + high-protein buttermilk | ~42 g |
| tin paneer 50 g, peanuts 50 g, fruit | ~29 g |
| dal, 3 rotis, salad, curd | ~24 g |
| total | ~130 g |
| day plan 04 · hard training day | protein |
|---|---|
| overnight oats jar, bigger | ~23 g |
| whey sachet in water, 1 banana | ~26 g |
| soya chunk pulao with veg | ~39 g |
| 2 eggs, 2 rotis, guava | ~22 g |
| dal, rice, sabzi, curd | ~18 g |
| total | ~128 g |
dry vs cooked - weigh it once (day plan 01): the day plans weigh staples dry because cooked weight depends on your kitchen: rice and dal swell with the water they take on, and roti size varies by household. Cooking for family or serving out of a shared pot? Weigh your portion once to learn what your katori or ladle holds, then serve by eye. (NIN's standard katori is 200 ml; home bowls vary.)
whey is a tool for no-time days, not a requirement. It earns its place when there is no time, no kitchen or no appetite right after training - one 32 g sachet gives ~25 g. Plan 04 uses one sachet; on easy weeks, eat plan 01 and skip it. Read protein per 100 g on the back panel, never the pack name.
if milk troubles your stomach: lactose-free swaps
About three in five Indian adults do not fully digest lactose - that is lactose malabsorption, not the same as symptomatic lactose intolerance, and many people still handle ordinary servings with meals. It is about dose, not a ban. Curd and chaas often sit better than milk; fresh paneer keeps some lactose, so start small.
| item | the swap |
|---|---|
| milk | lactose-free milk or soy milk - check protein per 100 ml on your pack; add soy curd for a fully plant-based jar |
| curd | often easier than milk; if it still doesn't sit well, soy curd - or extra soya chunks in the meal |
| paneer | firm tofu, ~17 g protein per 100 g and naturally lactose free; softer packs run lower, so read the panel |
| whey | a sachet labelled lactose free; isolate usually runs lower than concentrate - check the label and your tolerance |
regular bloating, gas or loose motions after milk? a doctor can confirm it with a simple breath test - don't self-diagnose from a PDF. lactose-free products are still dairy and no help for a milk allergy. if dairy drops out fully, watch calcium and vitamin D: tofu, leafy greens, beans and fortified soy milk.
daily fibre
Day plan 01 (veg plus eggs) carries an estimated ~39 g of fibre from the oats, dal, chana, whole-wheat rotis, sabzi and fruit. The ICMR-NIN benchmark is about 15 g per 1,000 kcal, so a ~2,125 kcal day clears it with room. Fibre figures are estimates; plans 02-04 were not separately audited, so expect a similar pattern and let your own labels decide. Race days are the exception: the low-fibre loading pattern is a 36-48 h race tool, and the brown rice, salads and sprouts come back after the medal.
fats, practically
- where fat fits: the remaining calories after protein and carbs, about 20-30% of the day (step 4 of the macros chapter).
- sources: ghee, nuts, seeds and oil in cooking. Keep fried food occasional, not daily.
- the calorie lever: peanuts and peanut butter are calorie-dense - useful when a day ran lean, so weigh them rather than pour.
- trimming for fat loss: take the ~300-400 kcal from oils, snacks and the bed-time milk - never from pre- or post-run food.
- race days: low fat on the last loading day and race morning, so the gut stays calm.
build your own plate
Every meal is a protein anchor + a carb base + veg or fruit + a little fat. Portions: start from the day plans above and the portion dials in the full-day chapter. Adjusting: training more? Grow the carb base first. Protein target up? Add an anchor, not a new recipe. Spotting gaps: check the micronutrients watch-list; if a concern or symptom persists, discuss it with a clinician.
02b · Your calories & macroshow many calories and how much protein does a runner need?
the sports-dietitian math, done by hand - the same method the calculator's daily energy part uses
step 1 · your resting burn (BMR)
The most-used research equation is Mifflin-St Jeor:
men: BMR = 10 x weight(kg) + 6.25 x height(cm) - 5 x age + 5
women: BMR = 10 x weight(kg) + 6.25 x height(cm) - 5 x age - 161
example: 60 kg, 170 cm, 28-year-old man = 10x60 + 6.25x170 - 5x28 + 5 = 1528 kcal
step 2 · add your life (activity factor)
| your week | multiply BMR by |
|---|---|
| desk job, light training (2-3 runs) | x 1.4-1.5 |
| training 4-5 days a week | x 1.55-1.65 |
| heavy training, 6+ days or doubles | x 1.7-1.9 |
Our example runner at 4-5 days: 1528 x 1.6 = ~2450 kcal/day to stay the same weight.
step 3 · set the goal
| goal | adjustment | rule |
|---|---|---|
| perform / maintain | eat at your number | under-eating is the most common training error |
| lose fat | minus 300-500 kcal/day | slow only - big cuts cost muscle, recovery and immunity |
| build muscle (with gym) | plus 200-300 kcal/day | small surplus + protein + progressive lifting |
step 4 · split it into food (macros)
| macro | runner target | 60 kg example |
|---|---|---|
| protein | 1.2-1.6 g/kg · 1.4-1.8 with regular gym work (master table, below) | 72-96 g/day |
| carbs | 3-5 g/kg light weeks · 5-7 normal · 7-10 heavy marathon blocks | 300-420 g normal |
| fat | the remaining calories, ~20-30% | 55-80 g |
don't go low. chronic under-fuelling (REDs - relative energy deficiency in sport) shows up as stalled times, frequent colds, poor sleep, low mood and, in women, missed periods. if that's familiar, eat more and see a doctor - more training is not the answer.
how much protein? the master table
One master reference table, used throughout this guide and its sibling workout guide.
| training focus | practical daily protein reference |
|---|---|
| recreational endurance training | 1.2-1.6 g/kg |
| running combined with regular strength training | 1.4-1.8 g/kg |
| strength-focused training | 1.6-2.0 g/kg |
These ranges are practical reference points, not mandatory targets. Protein needs vary with training volume, energy intake, age, recovery demands and individual circumstances. Example for a 60 kg runner: 1.2 g/kg = 72 g/day · 1.6 g/kg = 96 g/day · 1.8 g/kg = 108 g/day · 2.0 g/kg = 120 g/day. Not every runner needs the highest figure - most training sits inside the first two rows.
where 100 g fits - everyday target: a sensible everyday number for many runners, which is why this guide's day plans aim there with slack. Your own number comes from your weight and training.
where 200 g fits - special case: the reference ranges reach ~200 g only at heavier body weights, around 100 kg and up. For a 60 kg person, 200 g is about 3.3 g/kg/day - substantially above the general reference ranges in this guide, and not a standard target for runners. It remains a deliberate muscle-gain choice to make with a coach or nutritionist.
| target | how to get there (day plan 01 + add-ons) |
|---|---|
| to ~150 g | base day + 1 whey sachet + 2 eggs ≈ 151 g protein, ~2,400 kcal |
| to ~200 g | base day + 2 whey sachets + 50 g extra dry soya + 2 eggs ≈ 202 g protein, ~2,700 kcal - at 60 kg that is ~3.3 g/kg/day, well above the master table: the heavier-athlete or coach-led muscle-gain case, not a standard target |
the carb squeeze: carb needs scale with training (~3-5 g/kg light days, 5-7 g for an hour a day, 6-10 g for 1-3 hours). the protein add-ons above don't automatically cover those training carbs - add rice, rotis and fruit around your runs.
a safety note: the published ranges behind this table come from studies of healthy adults who exercise (ISSN 2017; ACSM/AND/DC 2016); the three rows above are our practical reference points within those ranges, not any organization's exact table. Anyone with kidney disease, diabetes or another medical condition should set protein targets with their doctor, not a PDF. If a concern or symptom persists, discuss it with a clinician.
02c · Eating, on repeatwhat does a simple runner diet plan for india look like?
a diet you can follow beats a perfect diet you can't - including runner + gym days, and eating out
the repeatable week (veg base, swap as you like)
| meal | home version |
|---|---|
| breakfast | poha with peanuts + curd · or 2-3 eggs + 2 toast · or oats/dalia with milk + banana |
| lunch | thali: 2-3 roti or rice + dal + sabzi + curd + salad |
| snack | banana + chai · roasted chana · paneer/egg sandwich · fruit + a handful of nuts |
| dinner | rice or roti + rajma/chole/paneer/chicken + curd · khichdi + curd on easy days |
Repetition is a feature, not a failure. Most good runners eat a small set of meals on rotation - it makes shopping, cooking and hitting your numbers automatic.
runner + gym days
- carbs around the run - a banana or toast before, a real meal after.
- protein around the gym - 20-30 g within a couple of hours of lifting (2 eggs + milk, paneer, chicken, soy, or dal-rice).
- hard session days eat more, rest days eat normal - don't slash carbs on rest days; tomorrow's run is being fuelled tonight.
- lift and run the same day? separate them by a few hours when you can, and put the harder session first.
eating out / office canteen / travelling
| pick these | go easy on these |
|---|---|
| idli, dosa, uttapam | medu vada, bhature, poori-bhaji daily |
| dal-rice, rajma-rice, khichdi, curd-rice | butter-laden gravies + naan as the default |
| tandoori / grilled chicken, paneer tikka, egg curry + rice | deep-fried starters as the meal |
| boiled eggs from the breakfast counter or a thela | pastries and cream desserts as a "snack" |
| chaas, nimbu pani, coconut water, plain lassi | daily sugary cold drinks and loaded milkshakes |
| sandwiches, frankie with egg/paneer, poha/upma at the canteen | chips-and-soft-drink lunch substitutes |
the boiled-egg rule: when in doubt outside, anchor the meal with a simple protein you can see - boiled eggs, grilled chicken, paneer, dal - add rice or roti, and you're basically on plan. perfection is not required; the anchor is.
02d · Fuelling the weekhow should i eat on long run, interval and rest days?
"fuel for the work required" - eat for the run you're actually doing, not the one on instagram
| day | what changes |
|---|---|
| easy run (under 60-75 min) | normal meals. nothing special before; a snack if hungry. |
| long run (90+ min) | carb-rich dinner the night before; breakfast 1-3 h before; practise race fuel during - 30-60 g carbs/h. this is where race day is rehearsed. |
| intervals / tempo | a carb snack 60-90 min before (banana, toast); protein + carbs after. |
| gym day | 20-30 g protein within ~2 h of lifting; normal carbs. |
| rest day | eat normally - don't slash carbs. tomorrow's run is fuelled tonight. slightly smaller portions are fine if you're less hungry. |
periodise, don't flatline: your biggest eating days should be your biggest training days. heavy marathon-block weeks need 7-10 g/kg carbs; easy weeks need less. weight that drifts up in heavy training usually means under-fuelling during runs and over-compensating after - fix the during first.
02e · The gym sidehow do i fuel running + gym (and hyrox) together?
running + lifting together, without one eating the other
- protein is the anchor: 1.4-1.8 g/kg/day when running meets regular lifting (the master table, section 02b) - many gym+run runners land near 1.6 - split into 3-5 meals of ~20-40 g. the "30-minute anabolic window" is mostly myth - total daily protein matters far more than timing. just don't go many hours empty after lifting.
- separate hard sessions: lift and run hard on the same day only if separated by a few hours; otherwise alternate hard/easy days. legs day before a long run is a classic self-own.
- building muscle while running: small calorie surplus (+200-300 kcal), high end protein, and accept that heavy mileage slows muscle gain. pick the priority per season.
- creatine (3-5 g/day, any time): the one supplement with deep evidence for gym work - strength, power, muscle. it can add 1-2 kg of water weight, which distance runners feel. use it in gym-focused blocks, not peak race weeks.
- veg lifters: soy chunks (52 g protein/100 g dry), paneer, curd, milk, dal + rice together, peanuts - hitting 1.6 g/kg veg is very doable.
- fuelling for hyrox / hybrid events: hyrox combines running with demanding functional exercise, so fuelling covers both endurance demands and muscular work. prioritise familiar carbohydrate-rich meals in the 24-48 hours before, eat a familiar pre-event meal ~3-4 hours before the start (adjust timing and portion size to your tolerance), and treat any small carbohydrate top-up closer to the start as useful for some, not mandatory. practise the strategy in training; no unfamiliar foods or supplements on race day [23]. no marathon-length loading needed.
02f · A full day of eating, three wayswhat does a full day of eating look like for a runner?
veg, with eggs, or non-veg - one training day on a plate, with approximate numbers. 60-65 kg runner, evening run day
| meal | the plate (veg base) | approx |
|---|---|---|
| breakfast | poha with peanuts + 1 katori curd | 450 kcal · 14 g protein · 65 g carbs |
| mid-morning | banana + chai | 150 kcal · 2 g · 30 g |
| lunch | 2 roti + 1 katori rice + dal + sabzi + curd | 700 kcal · 25 g · 110 g |
| pre-run (5 pm) | 2 toast + jam, or a banana | 150 kcal · 3 g · 30 g |
| dinner (post-run) | rice + rajma + curd + salad | 700 kcal · 25 g · 100 g |
| before bed | 1 glass milk | 150 kcal · 8 g · 12 g |
| day total | ~2300 kcal · ~77 g protein · ~350 g carbs |
with eggs: breakfast becomes 3 eggs + 2 toast (+8 g protein); boiled eggs as the mid-morning or office snack. non-veg: lunch becomes chicken curry + rice, or grilled fish + rice at dinner (+15-20 g protein). carbs and calories barely move - protein is what the swaps buy.
the portion dials
| day | turn |
|---|---|
| easy / rest | base day as-is. smaller snack if less hungry - don't slash dinner, tomorrow is fuelled tonight. |
| long run | + carb serving at breakfast and lunch (extra katori rice, extra toast); in-run fuel on top. |
| intervals / tempo | + carb snack 60-90 min before; protein + carbs after. |
| gym + run | + 20-30 g protein around the gym (2 eggs + milk, paneer, soy chunks); carbs stay. |
| fat loss | trim ~300-400 kcal from oils, snacks and the bed-time milk - never from pre/post-run food. |
office & after-work runs
Tiffin that travels: roti + sabzi + curd, rice-dal, egg or paneer sandwich. the 5 pm pre-run snack lives in your bag (banana, bread-jam, dates). run at 6-7 pm, dinner becomes the recovery meal within an hour or two of finishing. morning runner? shift the snack to post-breakfast and keep dinner normal.
meal-prep for full-time workers (sunday, ~1 hour): boil 6-8 eggs · cook a big dal + a big rice batch · chop 2 days of sabzi · portion peanuts/chana into small boxes · bananas + bread on the counter. weekdays then run on assembly, not cooking.
03 · Carb loadinghow do i carb load for a marathon?
the one legal performance boost every marathoner should use - and most indian runners skip
what it is (and who it's for)
Your muscles store carbs as glycogen. In a long race, glycogen is the fuel that keeps your pace alive past the 30 km mark. Carb loading - eating 10-12 g of carbohydrate per kg of body weight per day for the last 36-48 hours - pushes those stores well above normal - studies show real performance benefits from loading in events longer than about 90 minutes [1][2]. For anything shorter, your normal stores already cover you. Start after your last real training session, and spread the carbs across 5-6 eating occasions a day - the sample plan below shows the split. giant single meals are hard to finish.
| race | loading plan |
|---|---|
| 5k / 10k | none needed. eat normally; the race-morning meal is enough. |
| half marathon | normal carb-rich eating covers most runners; an extra carb-focused day can help a long or hard race - a full 2-day load is optional. |
| marathon | 2 full days (36-48 h) at 10-12 g/kg/day. this is where loading pays off. |
| ultra | 2-3 days at the same 10-12 g/kg/day target. |
clean carbs - what to actually eat
"Clean" for loading means low fibre, low fat, easy on the gut: white over brown, peeled over skin-on, cooked over raw, light on oil and masala. These are not the days for brown rice, salads and sprouts - fibre slows absorption and can cause race-morning trouble. this low-fibre pattern is a 36-48 h race tool, not an upgrade on everyday eating: the brown rice, salads and sprouts come back after the medal.
| food | serving | carbs |
|---|---|---|
| white rice (cooked) | 1 cup / katori | ~45 g |
| potato (boiled, peeled) | 1 medium | ~30 g |
| banana (ripe) | 1 medium | ~25 g |
| idli | 2 pieces | ~20 g |
| white bread | 2 slices | ~30 g |
| sabudana khichdi | 1 plate | ~45 g |
| chapati | 1 | ~18 g |
| dates | 4 regular | ~28 g |
| jam / honey | 1 tbsp | ~15 g |
| fruit juice | 1 glass (200 ml) | ~25 g |
| poha / upma (plain) | 1 plate | ~40 g |
| dosa (plain) | 1 | ~30 g |
Whatever your diet - veg, eggetarian, non-veg or vegan - the loading foods stay the same staples. Protein (eggs, chicken, dal, paneer) can stay on the plate, just modest, while rice, roti, potato and fruit take the space.
sample 2-day load · 60 kg runner · ~640 g/day (~10.5 g/kg - inside the 10-12 target)
| day -2 | carbs |
|---|---|
| breakfast: big plate poha + banana + juice | ~95 g |
| mid-morning: 2 bread + jam + milk | ~60 g |
| lunch: 3 cups rice + dal + boiled potato + curd | ~185 g |
| snack: 4 dates + banana + juice | ~80 g |
| dinner: 2.5 cups rice + light sabzi + curd | ~140 g |
| before bed: milk + 1 tbsp honey | ~30 g |
| sips through the day: juice / sports drink | ~50 g |
| day total | ~640 g |
| day -1 (clean & simple, low fibre) | carbs |
|---|---|
| breakfast: 4 idlis + honey + juice, or white-bread jam + juice | ~85 g |
| mid-morning: banana + sports drink | ~50 g |
| lunch: 3 cups white rice + thin dal + curd (skip heavy sabzi) | ~160 g |
| snack: light sabudana khichdi + dates | ~75 g |
| second snack: 2 bread + jam | ~45 g |
| dinner (early): 2.5 cups rice or 5 chapatis + potato + plain curd | ~140 g |
| before bed: milk + 1 tbsp honey | ~30 g |
| sips through the day: juice / sports drink | ~60 g |
| day total | ~645 g |
your diet, your plan: veg is the base above. eggetarian - add 2 boiled eggs at breakfast. non-veg - a small grilled-chicken or fish portion with rice at lunch. vegan - soy milk plus extra juice, banana and dates. the carb numbers barely move.
what loading is not: rice, banana, potato, bread, jaggery, juice and dates cover nearly the whole load - ordinary food does this job. and loading is not eating to sickness: if ~640 g feels impossible, start with 8 g/kg and build up across races. a smaller load done comfortably beats a perfect load you can't finish. and loading is a race tool, not a training-week habit - ordinary weeks don't need it.
04 · Race morningwhat should i eat on race morning?
top off the tank, calm the gut, start hydrated
| when | what |
|---|---|
| 3-4 h out | main pre-race meal: 1-4 g/kg carbs (for 60 kg, ~120 g about 3 h out). low fibre, low fat, low protein. white bread + jam + banana, or idli + honey. sip 5-7 ml/kg fluid (300-420 ml). |
| ~1 h out | optional small top-up only if you're used to it: a banana, a few dates, or half a gel (~20-30 g carbs). skip entirely if your stomach is nervous. |
| 10 min out | a few sips of water or sports drink. that's it - the work is done. |
what to avoid: anything fried, very spicy, creamy, or high-fibre; milk-heavy breakfasts if dairy sits heavy for you; and above all, anything you have not eaten before a training run.
early-start reality: indian races often start at 5-6 am. a 3-hour gap means a 2 am alarm - if that's not happening, eat a smaller version (~1 g/kg) 60-90 minutes out: 2 bread + jam, or 2 idlis + half a banana. a small meal you keep down beats a big one you don't.
the 4 am race-morning gut & toilet routine
- Wake 2.5-3 hours before the gun (or 90 min for the small breakfast); have your usual morning drink - coffee, chai or water, whatever normally gets things moving for you.
- Give yourself 10-15 unhurried minutes on your feet - easy walking around the room, gentle hip/torso movement, no rushing.
- Rehearse this exact wake-up, drink, breakfast and toilet timing before two Sunday long runs, so race morning is automatic.
05 · During the racehow many carbs per hour during a half or full marathon?
carbs per hour by race length, sodium for the sweat, and the desi fuels that work
| race length | carbs per hour | notes |
|---|---|---|
| under ~75 min | little or none | a carb mouth-rinse or a few sips of sports drink can still help the brain [20]. |
| 1 to 2.5 hours | 30-60 g/h | any carb source works at these rates. |
| over 2.5 hours | up to 90 g/h | needs glucose + fructose together (most gels and sports drinks are blends). start at ~60 g/h and build up across training. |
why the blend matters: a single carb source absorbs at ~60 g/h max - that's the gut's ceiling, not the muscle's need. glucose and fructose use different gut transporters, so together they get past the ceiling with less stomach trouble.
pocket fuel - what to carry, what it gives
| carry / grab | carbs | notes |
|---|---|---|
| energy gel (1) | ~22-25 g | the standard. take with water. |
| banana (1) | ~25 g | gentle on the gut, available everywhere. |
| dates (4) | ~28 g | the original desi gel. |
| chikki (1 small piece) | ~20-25 g | works, but has fat + fibre - test in training first. |
| glucose biscuits (4) | ~20 g | dry - needs water alongside. |
| raisins (small box) | ~30 g | easy to portion. |
| jaggery cube | ~12-15 g | emergency top-up. |
| sports drink (500 ml) | ~30-40 g + sodium | carbs and electrolytes together. |
| nimbu pani, salt + sugar (500 ml) | ~25-30 g + sodium | the home-mixed sports drink. |
| cola (200 ml) | ~22 g | late-race classic at aid stations. |
mix and match to your hourly target (60-90 g/h for a marathon): e.g. 1 gel + half a bottle of sports drink per hour, or a banana + dates + sips. anything you race with must be something your gut has already met on long training runs.
sodium & fluid during the race
| what | target | why |
|---|---|---|
| fluid | 400-800 ml/h, scaled to your sweat test and the weather | heat raises sweat loss. never drink more than you sweat - see hyponatremia, section 06. |
| sodium | 0.5-0.7 g per litre of fluid; salty sweaters aim higher (500-700+ mg/h) | sodium keeps thirst and fluid absorption working; salty sweaters lose far more. |
05a · The short-race question: 5k & 10k10k under 60 minutes nutrition: what to eat before a 10k?
running under ~75 minutes? here's the honest shopping list: almost nothing
"i want to run 10k under 60 minutes - what do i eat, carry and load?" mostly: nothing special. your glycogen tank holds far more than 75 minutes of hard running - the load menus and gel belts in this guide start mattering only at longer distances [2][3]. nobody ever carb-loaded their way under 60 minutes in the 10k: the runners who break 60 eat normal dinners, sleep well, and train for months. the gel at km 7 is a security blanket, not fuel.
| for a 5k / 10k under ~75 min | verdict |
|---|---|
| carb load (10-12 g/kg menus) | not needed - loading is a tool for events over ~90 minutes [2] |
| gels / chews / in-race carbs | not needed - the tank you started with is the whole story |
| electrolyte drinks | not needed on a normal day; food sodium covers a short race |
| water | drink to thirst; a few sips at the start or a station if it's hot [8] |
what to eat before a 10k: what to actually do
- night before: a normal dinner with carbs - dal-rice, roti-sabzi, pasta. no loading menus, no force-feeding - sports nutritionists who advise 10k runners say the same: carb-rich dinner, light on fat, hydrate that evening [27].
- race morning: light, familiar, low-fibre: 2 idlis, toast + jam, or a banana about 60-90 min out (2-3 h if you eat a full breakfast). sip ~500 ml of fluid from waking to the start, ideally with a little sodium [27]. a 5:30 am 10k needs no 2 am meal - and running it fasted is fine for most healthy runners.
- during: nothing to carry. water to thirst. on a hot, humid morning a few sips at a station is comfort, not chemistry. chasing seconds? a carb mouth-rinse (swill and spit) shows a small real benefit in 30-75 min events [20].
- after: normal recovery - carbs + protein within a couple of hours (section 07). misal pav counts.
when the short race stops being simple
- very hot / humid, or you sweat buckets: add sodium to your bottle (nimbu pani + a pinch of salt works) - salty sweaters, section 06 applies at any distance.
- out there 75+ min (hot-day 10k, hilly 15k): section 05's 1-2.5 h row now applies - ~30 g/h of carbs is reasonable.
- chasing a hard pb: caffeine 1-3 mg/kg about an hour before the start is legal speed with real evidence [6] - test it in training first.
- diabetes, kidney, heart or blood-pressure conditions: your doctor's plan outranks this page. fasted racing in particular is not for everyone.
elite practice matches (practice, not research): eilish mccolgan, european 10k road record holder - pasta/rice with chicken or fish the night before, porridge + berries + banana on race morning, nothing during runs under an hour: "on a race day, i never try anything new" [28].
the race fuel calculator switches to this short-race plan on its own for any finish under ~75 minutes.
06 · Hydration & the sweat testhow do i calculate my sweat rate, and am i a salty sweater?
the single most useful measurement a runner can take at home - free, one hour, no lab
the 1-hour sweat test, step by step
- weigh in: dry, minimal clothes, right before a 1-hour run at race pace. write it down.
- run: track exactly how much you drink, in ml.
- weigh out: towel off, weigh again, same conditions.
- calculate: sweat rate = (kg lost x 1000 + ml you drank) / hours run. every 1 kg = 1 litre of sweat.
- repeat in race-like weather: heat and humidity change the number a lot. pune runners should test on a warm morning, not a cool one.
example: 60.0 kg before, 59.0 kg after, 500 ml drunk in 1 hour = (1.0 x 1000 + 500) / 1 = 1500 ml/h. your race fluid plan should replace a good share of that - not all of it. How much exactly depends on your pace, the heat and your stomach, which is why you rehearse it in training. The hard line runs the other way: never drink so much that you finish heavier than you started. Plan first; thirst fine-tunes. A measured 1.5 litres per hour is not an order to drink 1.5 litres per hour. Put your number into the race fuel calculator ("i measured my sweat rate").
am i a salty sweater?
White salt lines on clothes or cap brim, sweat that stings your eyes, gritty skin after a run - that's high sweat sodium. Sweat sodium varies enormously between people - field data from 30,000+ athlete sweat tests puts the average near ~950 mg per litre with roughly a ten-fold spread, and your number is mostly genetic and stable [21]. which is exactly why one-size advice fails. want your own number? the weigh-before/after test above is the same method used by indian sweat-test tools like upandrun's know-your-sweat [22] - test once, use it for years. salty sweaters use the upper end of the sodium ranges in this guide.
the danger nobody warns runners about: hyponatremia. drinking far more plain water than you sweat dilutes blood sodium. mild cases cause nausea, headache, confusion; severe cases are life-threatening. it is more common in slower runners drinking at every station "to be safe". the fix is simple: know your sweat rate, drink to plan or to thirst, and never force-drink beyond your losses - sodium in your bottle does not make continued over-drinking safe [8]. And severe headache, confusion or vomiting during an event is not a self-treat moment: stop and get urgent medical assessment.
everyday hydration
Daily hydration needs vary with body size, activity, climate, food intake and individual physiology - there is no single daily water target that suits every runner. Drink regularly through the day, watch thirst and urine patterns (pale-yellow is a decent check), and expect needs to rise in hot weather and higher training loads.
07 · Recoverywhat should i eat after a race or long run?
the race isn't over at the finish line - the next training block starts with what you eat in the first hours
the first hours
| what | target | 60 kg example |
|---|---|---|
| carbs | rapid turnaround (another hard session within ~8 h): ~1.0-1.2 g/kg per hour for the first few hours [7]. Otherwise: a proper carb-rich meal soon, then normal eating across the day | rapid: ~60-72 g/h |
| protein | ~0.25-0.3 g/kg with the carbs | ~15-18 g |
| fluid | ~1.25-1.5 litres per kg of body mass lost, sipped gradually over the recovery period, with sodium through suitable drinks or food | lost 2 kg = ~2.5-3 L over the day |
The hourly carb number is the rapid-recovery protocol - it matters when the next hard session is close, not after an ordinary Sunday run with an easy Monday ahead. The rehydration reference works the same way: most relevant when rapid recovery is needed or fluid losses were substantial, not a compulsory prescription after every ordinary training session.
Carbs refill glycogen fastest in the first hours after hard exercise; protein repairs muscle. Together is better than either alone - and the sodium matters because without it you pee out much of what you drink.
indian recovery plates
- dal-rice + curd + banana
- curd-rice + potato + buttermilk
- egg bhurji + 2-3 rotis + milk
- rajma-rice + lassi
- chicken curry + rice + nimbu pani
- soy-chunk pulao + soy or peanut curd (vegan)
- a glass of milk or soy milk + dates, if a full meal won't go down yet
the next day
Keep eating normally with plenty of carbs; appetite often lags while recovery demand stays high for 24-48 hours. gentle walking helps stiffness. sleep is the most powerful recovery tool you own - no supplement outperforms it. take it from the marathon greats: eliud kipchoge sleeps about 10 hours a day in heavy blocks (eight at night plus two by day), and nn running team coach addy ruiter says the 10-hour rule is common among elite marathoners [25]. your version: guard the 8 at night first.
08 · Caffeinehow much caffeine before running?
the legal performance aid already in your kitchen
Caffeine reliably improves endurance performance: it reduces how hard the effort feels and helps you hold pace late in a race. The studied range is 3-6 mg per kg of body weight, about 60 minutes before the start - but benefits show from much less and tend to plateau around 3 mg/kg [6]. Start at 1-3 mg/kg: for a 60 kg runner that's 60-180 mg, roughly 1-2 strong coffees. Chai counts too, but its caffeine varies a lot with the tea and the brew, so treat cup counts as rough. Some runners add a small top-up (a caffeinated gel or cola) in the second half of a marathon.
| source | approx caffeine |
|---|---|
| filter coffee / strong coffee (1 cup) | ~80-120 mg |
| instant coffee (1 cup) | ~60-80 mg |
| strong chai (1 cup) | ~40-60 mg |
| cola (330 ml) | ~35 mg |
| caffeinated gel | 25-50 mg (check the label) |
skip it if caffeine makes you jittery, gives you palpitations, wrecks your sleep, or you rarely take it - the gains aren't worth a ruined race. never try caffeine for the first time on race day. more is not better: beyond ~6 mg/kg, side effects climb and benefits don't.
09 · Supplements, gradedwhich running supplements actually work?
our honest grades, informed by the australian institute of sport's framework - so you spend on what works
A · solid evidence, worth considering
| supplement | what it does | notes |
|---|---|---|
| sports drinks / gels / electrolytes | deliver carbs, fluid, sodium | fuel tools, not magic - food versions work too (see pocket fuel) |
| caffeine | endurance performance | 1-3 mg/kg to start (studied range 3-6), ~60 min pre-race; coffee/chai count |
| iron | only if a blood test shows deficiency | never self-prescribe; excess iron is harmful |
| vitamin D | bone/immune health if deficient | common in india even with sun; test first |
B · real, but scenario-specific
| supplement | honest read |
|---|---|
| beetroot juice / nitrate | small endurance gains in some studies, more in recreational runners than elites. the dose that matters is nitrate (~5-9 mmol), not a fixed juice volume - products vary. food first: beetroot is a vegetable, you can just eat it. |
| beta-alanine | helps 1-4 minute maximal efforts (800m-1500m type work); little reason for distance runners. |
| creatine | genuinely effective for gym strength and sprint/power - not a distance-running supplement. fine for your gym days; expect a little water-weight gain. |
| sodium bicarbonate | can help short, hard efforts - with real risk of stomach distress, so rehearse it or skip it. not for marathons, and not without your doctor's okay with kidney or blood-pressure issues. |
| collagen + vitamin C | early evidence for tendon/ligament support; plausible, not proven. |
C · skip these
| supplement | why not |
|---|---|
| BCAA / amino blends | if you eat enough protein, you already get these. |
| glutamine (for performance) | evidence for performance benefit is weak. |
| "fat burner" products | no meaningful effect, real side-effect risk, sometimes contaminated. |
| antioxidant megadoses (vit C/E pills) | high doses may actually blunt training adaptation. fruit covers you. |
| testosterone "boosters" | don't work as marketed; contamination risk with actual banned substances. |
| most "superfood" powders | the whole foods they imitate do the job better. |
one more safety line: supplements in india are loosely regulated, and contamination happens. if you ever compete in tested events, use only batch-tested products (look for Informed Sport / NSF Certified for Sport). food first, always.
09b · Special situationshow should women, masters, teens and fasting runners fuel?
bodies differ. here's the honest, research-based read for the situations indian runners actually ask about.
women runners
- same fuelling formulas apply; targets scale with body weight, so absolute numbers are often smaller - not the percentages.
- iron matters more: periods raise iron loss, and distance running adds to it. tired-all-the-time + slowing times deserve a ferritin blood test, not another supplement guess.
- watch the REDs signs (section 02b): missed or irregular periods while training hard is a signal to eat more and see a doctor, not a badge of discipline.
- protein at the upper end (1.6 g/kg) supports masters women especially.
masters runners (40+)
- muscle holds less easily with age - aim for the top of the protein range (1.6 g/kg, some research says up to 1.8) and spread it across the day; ~30-40 g per meal.
- recovery chapters apply double: the post-run carbs + protein window and sleep matter more each decade.
- vitamin D and B12 tests are worth adding to the yearly blood work.
teen runners
- growing athletes need MORE food, not restriction. no calorie cutting, no carb fear, no supplements beyond food and a doctor's advice.
- the patterns in this guide (regular meals, carbs around runs, milk/curd/dal/eggs) are exactly right; the calculators' calorie floors don't apply - teens shouldn't count at all without a professional.
fasted runs, fasting festivals & ramadan
- easy 30-60 min runs can be done fasted if you feel fine; performance in anything hard or long suffers, so don't race or do long runs truly empty.
- training through ramadan: shift hard runs to after iftar when possible, front-load fluids and sodium between iftar and suhoor, keep suhoor carb-rich (oats, roti, banana, dates, milk) - dates at suhoor are genuinely ideal fuel.
- ekadashi-style one-day fasts: treat as a rest or easy day, and rehydrate properly after.
medical conditions
diabetes, thyroid conditions, blood pressure, kidney issues, celiac, pregnancy: this guide is not written for you directly. the principles still stand, but the numbers must come from your doctor or a registered dietitian who knows your reports. bring this guide to that conversation.
heat & monsoon (the pune chapter)
- hot & humid days can double sweat rate - redo your sweat test when the season changes.
- pre-hydrate on hot race mornings; add sodium on any run over an hour in heat.
- monsoon: less sweat doesn't mean no sweat - humid air still drives losses. don't skip fluids just because it's raining.
- signs to stop: dizziness, chills, confusion, cramps that won't settle. shade, fluids, help.
09c · Race week, step by stepwhat should i eat in race week?
the whole guide, compressed into the last 7 days. screenshot this page.
| when | do this |
|---|---|
| race -6 to -4 | eat normally. taper is running less, not eating less - you'll gain nothing by cutting food while mileage drops. stay hydrated, nothing exotic. |
| race -3 | start shifting the plate: more rice/roti/potato/bread, a bit less heavy protein and fried food. begin sipping through the day. |
| race -2 | full carb load day 1 (10-12 g/kg). pack your race kit: gels/dates/chikki you trained with, salt/electrolytes, bib, pins, watch. |
| race -1 | load day 2, low fibre. early, simple dinner. lay out everything. nothing new, nothing spicy, no alcohol. normal water intake - no force-chugging. |
| race morning | your practised breakfast 3 h out (or the small 1 h version). sips till the start. toilet plan executed. caffeine only if usual. |
| during | your rehearsed per-hour plan: carbs from the first hour, sodium in the heat, never over-drink. walk aid stations if needed - 20 seconds of walking beats 20 minutes of stomach war. |
| after | carbs + protein within the first hours, fluids with sodium, then a proper meal. celebrate - you earned the misal. |
the checklist: gels/fuel counted · electrolytes · bib + pins · watch charged · breakfast planned · transport sorted · alarm x2 · a throwaway layer for cold starts · your crew's meeting point.
if you're racing away from home
carry your race-morning foods with you (bread, jam, bananas, idlis travel fine) and don't experiment with the local specialty the night before; it will still be there after the medal. the full away-race timeline, what to order where, food safety and the food-bag packing list: sections 09f and 09g, below.
09d · When your gut fights backhow do i stop stomach trouble while running?
stitches, nausea and emergency toilet stops - the unglamorous chapter everyone needs
| problem | likely cause | fix |
|---|---|---|
| side stitch | big meal too close to the start; weak pacing early | finish eating 3 h out; slow down, exhale hard, press the spot; fades with fitness. |
| nausea mid-race | too much sugar at once, concentrated gels without water, over-drinking | smaller doses more often; always water with gels; slow fluid intake to plan. |
| runner's trots | high fibre/fat the day before, caffeine on a nervous stomach, race nerves | low-fibre day -1, test caffeine in training, morning routine at home, know the route toilets. |
| bloated, sloshing stomach | drinking faster than you absorb | you're over the sweat rate - back off, add sodium, sip don't chug. |
| can't eat after hard runs | normal - blood flow is still with the muscles | liquid first (milk, lassi, smoothie), solid meal an hour later. |
the long-term fix for almost all of this is gut training: practise eating and drinking at race intensity on long runs, starting small (30 g/h) and building up over weeks. the gut adapts like any other part of you.
09e · Myths, bustedis keto or fasted running better for runners?
- "keto / low-carb makes you a better fat-burning runner" - you do burn more fat... and lose top-end pace. studies show low-carb adaptation impairs the high-intensity gears racing needs. carbs are not the enemy.
- "fasted cardio burns more fat, so it's better" - it burns more fat during the session and roughly nothing more over the day. harder sessions done fuelled beat soft sessions done empty.
- "protein must be taken within 30 minutes" - the window is hours wide. total daily protein is what matters.
- "more supplements = more serious runner" - the strongest predictor is still boring: sleep, consistency, enough food.
- "electrolytes prevent all cramps" - most cramps are fatigue and pacing, not sodium. electrolytes help heavy salty sweaters; they don't make you cramp-proof.
- "you must drink before you're thirsty" - old advice, now reversed: forced over-drinking is the hyponatremia risk. plan or thirst, both beat chugging.
09f · Eating out, airports & race townswhat should a runner order when eating out or travelling?
what to order, wherever the week (or the race) takes you - everyday picks, plus the loading-window version
| where | everyday order | loading window (final 24-48 h) |
|---|---|---|
| office canteen | dal-rice, idli, chapati-sabzi, curd-rice | extra rice, curd, banana; skip the fried side |
| south indian | idli, plain dosa, uttapam, curd rice | idli + extra idli, plain dosa; skip vada and spicy podi |
| thali place | roti/rice + dal + light sabzi + curd | ask for extra rice; skip papad, heavy gravies, the sweet-but-one |
| cafes | egg/paneer sandwich, toast, pancakes, smoothie | jam toast, banana smoothie, juice; skip creamy pasta and oily bakes |
| roadside / dhaba | tawa roti + dal + jeera rice, fresh and hot | same, plus boiled potato if they have it; skip butter-fried everything |
| airport | idli/dosa counter, sandwich, banana, juice | bread-jam, rice bowl, juice; your packed snacks are better |
| railway station | hot idli from a busy stall, platform bananas, sealed water | same - busy stall, hot food, sealed bottle. that's the whole rule |
| hotel buffet | idli, bread-jam, banana, boiled eggs, curd, rice-dal | rice + potato + bread + juice; go light on salads (fibre) and rich desserts |
| near the race venue | plain rice-dal, khichdi, curd-rice - boring on purpose | same. the local specialty will still be there after the medal |
the loading-window rule, without confusion: picking lower fibre, fat and spice for 24-48 h (white rice over brown, peeled potato, ripe banana, plain over masala) is a short race tool for a calm gut - it does not make these foods "healthier" for everyday eating.
food safety on the road: hot and freshly cooked beats cold buffet; sealed bottled water, skip ice; fruit you peel yourself; a busy stall beats an empty pretty one. if a place feels doubtful, packaged food plus your own packed snacks wins. a stomach bug is the one race-weekend souvenir you don't want.
09g · Racing away from homehow do i fuel for an outstation race?
the outstation race, hour by hour - plus the food bag to pack
| when | do this |
|---|---|
| journey day | eat normal, familiar food; sip water through the trip; snack from your own bag; nothing experimental "because we're on a trip". |
| check-in | scout the hotel breakfast timing (and whether it opens early enough on race day); find one rice-dal place near the stay for load-day meals; ask for a kettle/fridge if you need one. |
| race -2 | load day 1, 10-12 g/kg - with foods your gut knows (section 03). hotel buffet + your packed snacks cover most of it. |
| race -1 | load day 2, low fibre; early, simple dinner; lay out kit; normal water, no force-chugging; nothing new, nothing spicy. |
| race morning | your packed, practised breakfast 3 h out in the room - this is why you carried it. sips till the start. toilet plan before leaving the hotel. |
| during | your rehearsed per-hour plan; aid-station drinks count toward it; walk stations if needed. |
| after | carbs + protein within the first hours (the snack in your bag bridges to a real meal), fluids with sodium, then go eat the local specialty - you've earned it now. |
the food bag (pack this)
- race fuel you trained with - gels / dates / chikki, counted per hour + 1-2 spares
- electrolytes / salt - sachets, tablets or a small labelled box
- race-morning kit: bread + jam, or oats + a banana (idlis and thepla travel well too)
- journey snacks: bananas, sandwiches, roasted chana, biscuits
- small tiffin with salt + sugar (emergency homemade ORS - for illness-related dehydration, not a race sports drink: 1 litre water + 6 level tsp sugar + 1/2 level tsp salt; use packaged ORS when available, and discard homemade mix after 24 h)
- water bottle for sips; ziplock bags keep all of it organised and dry
11 · How fuel becomes pacewhy do runners need carbs, and what is the bonk?
level up · the physiology underneath every recommendation in this guide
your two fuel tanks
You run on a mix of fat and carbohydrate (stored as glycogen in muscle and liver). Fat supply is huge - even lean runners carry days' worth - but burning it fast is hard: it delivers energy slowly. Carbs are the high-octane tank: limited (roughly 400-600 g stored), but able to fuel fast running. The mix shifts with intensity: easy jogging is fat-dominant; as pace rises toward race effort, carbs take over. This is why "just burn fat" fails at race pace - you cannot burn fat fast enough to run your best marathon.
| tank | size | used for | runs out? |
|---|---|---|---|
| fat | enormous | easy pace, daily life, ultra shuffle | practically never |
| muscle glycogen | ~300-500 g | threshold and race pace | ~90-120 min of hard running |
| liver glycogen | ~80-100 g | keeps blood sugar steady for brain + muscles | overnight / long races |
the bonk, explained properly
"Hitting the wall" is glycogen running low. Low muscle glycogen limits the pace you can sustain; low liver glycogen can impair blood glucose, contributing to the fatigue. Carb availability is one factor, not the whole story. In-race carbs exist to defend blood glucose, not just to feed muscles. this is why eating from the first hour works and eating when you feel bad is too late.
how the gut becomes the bottleneck
In long races the limit often isn't your legs - it's absorption. glucose enters blood through the SGLT1 transporter, which saturates near 60 g/hour; fructose uses a different door (GLUT5). together they clear ~90 g/h. fluid absorption also depends on drink concentration: very sugary drinks empty slowly from the stomach (that sloshy feeling), which is why sports drinks sit at 4-8% carbs and why you always take gels with water.
why this matters: carb loading (bigger tank), in-race fueling (defending blood sugar), sodium (absorption + thirst), gut training (raising the bottleneck) - every rule in this guide is one of these four mechanisms. understand the mechanisms and you can improvise correctly when plans meet reality.
12 · Micronutrients for runnerswhich vitamins and minerals matter for runners?
level up · the small stuff that quietly decides how the big stuff feels
| nutrient | why runners care | indian food sources | smart move |
|---|---|---|---|
| iron | carries oxygen; low ferritin = tired, slow, breathless | heme: chicken, fish, eggs. non-heme: spinach, dal, chana, jaggery, til | pair non-heme iron with vitamin C (nimbu on dal!); keep chai/coffee an hour away from iron-rich meals; test ferritin yearly |
| vitamin D + calcium | bone strength; low levels link to stress fractures | d: sunlight + fortified milk; calcium: milk, curd, paneer, ragi, til | curd daily; ragi dosa is a runner's friend; test D yearly (very common deficiency even in sunny india) |
| B12 | red blood cells, nerves; veg runners run low | milk, curd, eggs; fortified foods | veg: include dairy daily or test yearly |
| potassium | fluid balance inside cells, muscle function | banana, potato, coconut water, dal | normal food covers it; coconut water is the natural "electrolyte drink" for potassium |
| magnesium | muscle function, sleep, energy metabolism | nuts, seeds, whole grains, banana, dark greens | a handful of nuts daily beats a pill |
| zinc | immunity, recovery | dal, chana, nuts, seeds, eggs, dairy | covered by a varied indian plate |
the pattern: runners usually don't have a supplement deficiency - they have a testing deficiency. yearly blood work (CBC, ferritin, B12, vitamin D, thyroid if symptomatic) tells you which row of this table actually applies to you. treat the report, not the internet.
13 · Gut training masterclasshow do i train my gut for race fuelling?
level up · the 4-week progression that turns race fueling from stomach-war into routine
Your gut is trainable like your legs: regular carb intake during running increases absorption capacity and tolerance. elite athletes taking 90-120 g/h didn't start there - they built up over months. here's the build.
| week | target on long runs | how |
|---|---|---|
| 1 | 30 g/h | 1 gel or a banana or 4 dates per hour, always with water. note how the stomach feels at each dose. |
| 2 | 40-50 g/h | split into 2 doses per hour, 20-30 min apart - smaller hits absorb kinder. |
| 3 | 60 g/h | introduce a glucose+fructose product (most gels/drinks) - blends are required past 60. |
| 4 | 60-75 g/h, at race pace | rehearse the exact race plan: same products, same timing, same breakfast, same wake-up time. |
- concentration rules: drinks above ~8% carbs empty slowly - sloshing means dilute it or slow down the intake.
- practise the whole morning: breakfast, timing, caffeine, kit - not just the gels.
- trouble signs to adjust, not abandon: nausea = smaller, more frequent doses; sloshing = too much fluid; cramps = usually pacing, not fuel.
- off-season: gut capacity fades - rebuild before each race block rather than assuming last season's tolerance.
13b · Level up: periodising your carbsshould runners periodise carbs or train low?
expert · eating like a program, not a habit - match the fuel to the work
The modern framework is called "fuel for the work required" [16]: carbohydrate is not a fixed daily religion, it scales with the session. Hard days are high-carb days. Easy days are moderate. This is how elite programs eat, and it needs nothing extra - just timing.
| day type | carbs | what that looks like |
|---|---|---|
| rest / very easy | 3-5 g/kg | normal indian plate, grains at each meal, no forcing |
| moderate (45-75 min) | 5-7 g/kg | add a carb serving at breakfast and the pre-run meal |
| quality (intervals, tempo) | 6-8 g/kg, carbs before + after | never run key sessions low - quality needs glycogen |
| long run (90 min+) | 7-10 g/kg + in-run fueling | practise race fueling here (section 13) |
| race week | taper volume, load last 36-48 h at 10-12 g/kg | section 03 does the math |
"train low" - the honest version
Doing some easy sessions with low glycogen (e.g. morning run before breakfast) can amplify cellular training adaptations [16]. but the performance evidence is weak, and the risks are real: worse session quality, higher illness and injury risk, and a slide into chronic under-fueling (REDs) [11]. if you experiment: keep it to occasional easy sessions, never key workouts, never race week, and stop if you feel flat for days.
and keto / low-carb for racing?
Adaptation to a ketogenic diet massively raises fat burning - and still made elite race walkers slower in a controlled study, because fat burning costs more oxygen at race pace and it negated their training gains [13]. verdict: fine as a personal diet choice, a proven disadvantage for racing your fastest.
the 80% version: eat carbs around hard and long sessions, eat normally otherwise, never diet aggressively while training hard. that alone beats 95% of "optimised" diets.
13c · Level up: supplement protocols, properlywhat are the researched doses for caffeine, beetroot, creatine and more?
expert · the few with real evidence, at the doses the studies actually used
Section 09 graded the shelf. this page is the how for the AIS "Group A" list - the handful with established protocols [5][17]. (the same names sit in 09's B tier: proven, but only for event types most runners rarely race.) none of these outrun a bad diet; each is a 1-3% edge.
| supplement | protocol used in research | watch out |
|---|---|---|
| caffeine [6][17] | 1-3 mg/kg to start (studied range 3-6), ~60 min pre-race (60 kg: 60-180 mg to start) | response varies genetically; more is not better (jitters, gut upset); daily heavy use blunts sensitivity and steals sleep, which costs more than caffeine gives |
| nitrate (beetroot juice) [5][17] | ~5-9 mmol nitrate (≈310-560 mg) 2-3 h before; daily for 3+ days works better than once | antibacterial mouthwash kills the effect (oral bacteria convert nitrate); benefits shrink in highly trained athletes; turns urine pink, which is harmless and alarming |
| sodium bicarbonate [5][17] | 0.2-0.4 g/kg, 60-150 min pre, split doses with food | GI distress is common - rehearse in training or skip; mainly helps hard 1-10 min efforts (track, rowing), less for steady road races |
| beta-alanine [5][17] | 3.2-6.4 g/day for 4+ weeks (not a race-day pill) | tingling (paresthesia) is harmless; targets 1-4 min max efforts - useful for milers, mostly decorative for marathoners |
| creatine [5][17] | 3-5 g/day, any time (loading: 20 g/day split x 5-7 days, optional) | adds 1-2 kg water/muscle - great for the gym block, counterproductive right before a race you carry your weight through |
- test everything in training - the golden rule applies double to bicarbonate.
- contamination is real: supplements can carry banned or undeclared substances [17]. if you compete, choose third-party-tested products (Informed Sport or similar); if a brand hides its testing, that is your answer.
- vitamins/minerals only fix a measured deficiency (section 12) - more is not faster, and iron without a blood test can do harm.
the order of operations, honestly: sleep 8 hours > eat enough > train consistently > carbs around hard sessions > caffeine > everything else on this page. supplements are the garnish, never the meal.
13d · Level up: ultras, heat & the monsoonhow do i fuel an ultra or a race in indian heat?
expert · when the race is 4+ hours, or the weather is the real opponent
ultra distance: fueling is the event
- start eating in the first 30-45 min and never stop: 40-90 g/h by gut training (section 13), front-loaded - races are lost to fueling debt you cannot repay later.
- mix food types: gels early, real food (potato, banana, sandwich, upma) as hours pass, something savoury by hour 3-4 - sweet fatigue is the top reason ultra runners stop eating.
- the ironman version of the same rule: triathlon coaches feed every 15-20 min on the bike with real food - rice cakes, jam sandwiches, mashed banana - precisely to beat flavour fatigue [24].
- caffeine is a late-race tool: hold it for the final third, when it does the most [6].
- sodium matters more with duration: 300-600 mg/h (salty sweaters higher) from drink + food, especially in heat - but more water is not more safety: drinking beyond thirst/sweat rate causes hyponatremia, the dangerous one [8].
racing in indian heat & humidity
- acclimatise: 10-14 days of training in the heat raises plasma volume and earlier sweating - the single biggest heat adaptation available, free.
- humidity changes the math: when sweat can't evaporate, you overheat without losing as much fluid. drink to your plan, but accept the pace the heat assigns - heart rate and effort over the watch.
- pre-cool and mid-cool: cold drinks, ice in the cap/bandana, sponge stations. small, real, free.
- adjust targets: a hot day can cost minutes. racing a PB plan in 32°C humidity is how DNFs are made.
race director brain: at your event's aid stations, practise with what they'll serve or carry your own - "what's on the course" is a fueling variable like any other. and tell someone your plan: ultras reward boring, careful people.
14 · Three runners, three planswhat do these numbers look like for real runners?
level up · watch the whole method applied, start to finish, on three very different people
runner A · 50 kg, 24F, first 10k, veg, light training
BMR = 10x50 + 6.25x160 - 5x24 - 161 = 1219 · x 1.45 = ~1770 kcal to maintain. protein 60-80 g (dal, paneer, curd, soy daily). carbs ~4 g/kg (~200 g) on light weeks, more on bigger days. race plan: no loading, no in-race fuel - breakfast (2 idlis + half banana) 2 h out, water at the start, normal food after. ferritin + B12 checked with a doctor if energy dips. no supplements needed.
runner B · 70 kg, 32M, runs 4x + gym 3x, wants fat loss, eggetarian
BMR = 10x70 + 6.25x175 - 5x32 + 5 = 1638 · x 1.6 = ~2620 · minus 400 = ~2220 kcal/day. protein high end: 1.6 g/kg = 112 g (eggs daily + paneer/soy/curd, protein around gym). carbs ~4.6 g/kg (320 g) centered around runs. creatine fine for his gym blocks. slow loss: ~0.3-0.5 kg/week - faster would cost muscle and run quality. eating out: boiled-egg rule.
runner C · 65 kg, 38M, marathon 4:00 goal, hot race, salty sweater
load: 65 x 10-12 = 650-780 g/day for 2 days, low fibre on day -1. race morning: ~130 g carbs 3 h out + ~350-450 ml fluid. during: build to 70-90 g/h glucose+fructose (gut-trained per section 13), fluid 500-800 ml/h from his sweat test, sodium ~400-560 mg/h via drink + salt (≈0.7 g per litre of his fluid). caffeine 3 mg/kg = ~200 mg an hour out, if usual. recovery: 78 g carbs/h + ~20 g protein, 1.5x fluid losses with sodium, misal earned.
notice: same formulas, three completely different plates. that's the entire skill - and now you have it.
15 · The glossarywhat do sports nutrition terms mean?
level up · sound like you know what you're talking about (because now you do)
| term | plain meaning |
|---|---|
| glycogen | stored carbohydrate in muscle and liver - the high-octane tank. |
| carb loading | deliberately overfilling the tank (10-12 g/kg/day, 36-48 h) before long races. |
| BMR / TDEE | resting burn / total daily burn including life and training. |
| energy availability | food energy left for your body after training costs are subtracted; chronically low = REDs. |
| REDs | relative energy deficiency in sport - under-fuelling syndrome: stalled performance, illness, hormonal disruption. |
| osmolality | how concentrated a drink is; too concentrated empties slowly (sloshing). |
| glucose : fructose | two carb types absorbed through different gut transporters; blends beat the ~60 g/h single-source ceiling. |
| sodium / electrolytes | salts lost in sweat; sodium drives thirst, absorption and fluid retention. |
| hyponatremia | dangerously diluted blood sodium from over-drinking; worse than dehydration. |
| sweat rate | litres of sweat per hour - your personal fluid-loss number, from the 1-hour test. |
| ferritin | iron storage marker; low = fatigue and slow times long before anemia shows. |
| glycemic index | how fast a food raises blood sugar; useful around races, overrated elsewhere. |
| gut training | progressively practising in-run eating to raise absorption and tolerance. |
| periodisation | matching food to the training cycle - eat most on the biggest training days. |
| anabolic window | the mythologised 30-minute post-gym protein deadline; reality: hours wide, daily total wins. |
congratulations, genuinely: if you've read this far you know more applied sports nutrition than most people handing out advice online. use it well, share it freely, and when someone's case is medical - send them to a registered dietitian. that's what mid-level actually means: knowing the edges of what you know.
16 · Common mistakeswhat are the most common runner fuelling mistakes?
- under-fuelling long runs - training your gut is part of training; eat on runs over 90 minutes.
- trying new food on race day - the golden rule exists because everyone breaks it once.
- over-drinking plain water - hyponatremia is more dangerous than mild dehydration.
- carb loading for a 5k - pointless. loading is for 90+ minute races.
- copying elite intakes - elites taking 100-120 g/h are gut-trained for years; build up slowly from 30-60.
- cutting food hard while training hard - the fastest way to get slower, sick or injured.
- skipping recovery food because "i'm not hungry" - appetite lags, recovery doesn't wait.
17 · The numbers appendixhow does the race fuel calculator work it out?
every formula the calculator uses, with a worked example - check us by hand
Worked example throughout: 60 kg runner, marathon in 4:30, hot & humid race, salty sweater. every number in this guide is a starting range from research, not an individual prescription - gut tolerance, medical conditions, medications and goals all move them. for a personal plan (or any condition), a registered sports dietitian is the professional.
| step | formula | worked example |
|---|---|---|
| daily calories | BMR (Mifflin-St Jeor) x activity factor (1.4-1.9), then goal: -300 to -500 (lose) / 0 (perform) / +200-300 (build) | 1528 x 1.6 = ~2450 kcal to maintain |
| protein | master table: 1.2-1.6 recreational · 1.4-1.8 run + strength · 1.6-2.0 strength focus | 72-96 g/day recreational |
| carb load | weight x 10-12 g/kg/day, last 36-48 h | 60 x 10-12 = 600-720 g/day |
| race-morning meal | 1-4 g/kg, 1-4 h before | ~2 g/kg at 3 h out = ~120 g |
| pre-race fluid | 5-7 ml/kg with the meal | 300-420 ml |
| in-race carbs | <75 min: little/none · ~1-2.5 h: 30-60 g/h · >~2.5 h: build towards 60-90 g/h where appropriate | 4:30 race = 60-90 g/h, gut-trained |
| sweat rate | ((weight before - weight after) x 1000 + ml drunk) / hours | (1.0 x 1000 + 500)/1 = 1500 ml/h |
| race fluid | 400-800 ml/h, scaled by sweat test, never above sweat rate | hot day = 500-800 ml/h |
| sodium | 0.5-0.7 g per litre of planned fluid; salty sweaters aim higher | ~0.6 L/h x 0.5-0.7 = 300-420; salty: aim 500-700 mg/h at ~1 L/h |
| caffeine | 1-3 mg/kg to start (studied 3-6), ~60 min before | 60-180 mg to start; most runners stay at or under ~180 mg |
| recovery | rapid turnaround (<8 h to next hard session): 1.0-1.2 g/kg carbs/h + 0.25-0.3 g/kg protein early; fluid ~1.25-1.5x losses with sodium | ~60-72 g carbs/h + ~15-18 g protein (rapid days) |
18 · Sourceswhere does this advice come from?
- Burke, Hawley, Wong & Jeukendrup, "Carbohydrates for training and competition", Journal of Sports Sciences (2011) - carb loading 10-12 g/kg/day, 36-48 h; daily carb targets. doi:10.1080/02640414.2011.585473 (opens in a new tab)
- German Nutrition Society (DGE) Sports Nutrition Working Group position (2020), German Journal of Sports Medicine - loading recommended for events over ~90 min. germanjournalsportsmedicine.com (opens in a new tab)doi:10.5960/dzsm.2020.456 (opens in a new tab)
- Thomas, Erdman & Burke - ACSM / Academy of Nutrition and Dietetics / Dietitians of Canada position stand, Nutrition and Athletic Performance (2016): 30-60 g/h, up to 90 g/h; protein 1.2-2.0 g/kg. doi:10.1249/MSS.0000000000000852 (opens in a new tab)
- Jeukendrup, "A Step Towards Personalized Sports Nutrition", Sports Medicine (2014) - duration-based carb intake, glucose+fructose absorption ceiling, gut training. PMC4008807 (opens in a new tab)
- Australian Institute of Sport position statements - sports drink composition, electrolyte replacement (0.5-0.7 g sodium/L), and the supplement grading framework (A/B/C/D) behind sections 09 and 13c. ausport.gov.au/ais/nutrition (opens in a new tab)
- Guest et al., International Society of Sports Nutrition position stand: caffeine and exercise performance (2021) - 3-6 mg/kg. doi:10.1186/s12970-020-00383-4 (opens in a new tab)
- Jentjens & Jeukendrup, "Determinants of post-exercise glycogen synthesis during short-term recovery", Sports Medicine (2003), and subsequent recovery reviews - 1.2 g/kg/h carbs and protein co-ingestion. doi:10.2165/00007256-200333020-00004 (opens in a new tab)
- Hew-Butler et al., statement of the third international exercise-associated hyponatremia consensus (2015) - over-drinking as the primary cause; drink to plan or thirst. doi:10.1097/JSM.0000000000000221 (opens in a new tab)
- University of Washington Medicine sports hydration guidance - sweat-rate test protocol, 400-800 ml/h starting range. rightasrain.uwmedicine.org (opens in a new tab)
- Mifflin-St Jeor, "A new predictive equation for resting energy expenditure in healthy individuals", Am J Clin Nutr (1990). doi:10.1093/ajcn/51.2.241 (opens in a new tab)
- Mountjoy et al., IOC consensus on REDs (2018, updated 2023) - risks of chronic under-fuelling (REDs). doi:10.1136/bjsports-2018-099193 (opens in a new tab)doi:10.1136/bjsports-2023-106994 (opens in a new tab)
- "From Metabolism to Medals: Contemporary Perspectives and Revisiting Carbohydrate Guidelines for Fueling Endurance Athletes during Exercise", Journal of Nutrition (2026) - elite 100-120+ g/h field reports; supports ~90-120 g/h only if gut-trained. doi:10.1016/j.tjnut.2026.101442 (opens in a new tab)
- Burke et al. (2017), Journal of Physiology - low-carb keto adaptation impairs exercise economy in elite race walkers. doi:10.1113/JP273230 (opens in a new tab)PMC5407976 (opens in a new tab)
- ISSN position stand: protein and exercise (2017) - 1.4-2.0 g/kg/day for active people. doi:10.1186/s12970-017-0177-8 (opens in a new tab)
- Jeukendrup, "Training the Gut for Athletes", Sports Medicine (2017). doi:10.1007/s40279-017-0690-6 (opens in a new tab)PMC5371619 (opens in a new tab)
- Impey et al., "Fuel for the Work Required: A Theoretical Framework for Carbohydrate Periodization and the Glycogen Threshold Hypothesis", Sports Medicine (2018). doi:10.1007/s40279-018-0867-7 (opens in a new tab)PMC5889771 (opens in a new tab)
- Maughan et al., IOC consensus statement: dietary supplements and the high-performance athlete, British Journal of Sports Medicine (2018) - grading + protocols for caffeine, nitrate, bicarbonate, beta-alanine, creatine. doi:10.1136/bjsports-2018-099027 (opens in a new tab)PMC5867441 (opens in a new tab)
- "Carbohydrates and Endurance Exercise: A Narrative Review of a Food First Approach" (2023) - pre-race meal composition and timing. PMC10054587 (opens in a new tab)
- "Nutritional strategies to promote postexercise recovery" (2010) - post-exercise carbs + protein for glycogen resynthesis. PubMed 21116024 (opens in a new tab)
- "Maltodextrin-Based Carbohydrate Oral Rinsing and Exercise Performance: Systematic Review and Meta-Analysis", Sports Medicine (2022) - mouth rinse: small benefit in ~30-75 min exercise. PMC9325805 (opens in a new tab)
field & practitioner sources (practice, not research)
- Precision Fuel & Hydration sweat-test database + Andy Blow, "How to estimate how much sodium you lose in your sweat" (medically reviewed) - ~950 mg/L average, roughly ten-fold spread, 30,000+ tests. precisionhydration.com (opens in a new tab)
- UP&RUN (india), "Know Your Sweat" - indian sweat-test calculator; ~920 mg/L mean, 60-70% in-session replacement. upandrun.in (opens in a new tab)
- Davey Nutrition (sports nutritionist), "HYROX Fuelling Overview" - hybrid protocol: 6-8 g/kg load 24-48 h, last meal 3-4 h out, 30-60 g top-up. daveynutrition.com (opens in a new tab)
- James Witts, "How to fuel the Ironman", 220 Triathlon - coach Fran Bungay: feed every 15-20 min on the bike with real food to beat flavour fatigue. 220triathlon.com (opens in a new tab)
- Sean McAlister, Olympics.com, "How to fuel, rest and recover like Eliud Kipchoge" - elite practice: ~10 h daily sleep; coach Addy Ruiter on the 10-hour rule. olympics.com (opens in a new tab)
- Marathon Handbook, "The Runner's Guide to Carb Loading" - practical companion reading. marathonhandbook.com (opens in a new tab)
- Runner's World, "What to eat before a 10K", with SiS sports nutritionist Emma Barraclough - 10k practice: carb-rich dinner, familiar breakfast 2-3 h out, ~500 ml fluid pre-start, no fuel during. runnersworld.com (opens in a new tab)
- Science in Sport athlete interview, "How Eilish McColgan Fuels for Performance" - elite 10k race-day routine from the european 10k road record holder (SiS-sponsored; brand-published practice). scienceinsport.com (opens in a new tab)
kitchen chapter sources
- requirements & balance: ICMR-NIN 2020 Nutrient Requirements for Indians (protein; fibre ~15 g per 1,000 kcal) · ISSN protein stand 2017 · ACSM/AND/DC 2016 + IOC carb targets · Institute of Medicine balanced macronutrient ranges.
- food composition: IFCT 2017, National Institute of Nutrition · USDA FoodData Central · product pack labels (checked 5 Nov 2026).
- lactose & dairy swaps: lactose malabsorption in adults, Lancet Gastroenterology & Hepatology 2017 meta-analysis · managing lactose intolerance, NIDDK.
- the fine print: macros from IFCT 2017, USDA and product labels; brands vary - treat totals as approximate. fibre figures are estimates from the same tables. day totals are the sums of the listed meal rows.
remember: this guide is general education, not medical advice. your doctor and a registered sports dietitian can personalise it to your health, blood work and goals - especially for diabetes, kidney, heart or blood-pressure conditions.
see you at the start line
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