What to eat before running

Nobody runs well on a full stomach — or an empty one. The answer sits in the middle, with precise numbers.

For runs over an hour: 1–4 g carbs/kg, 1–4 hours before, low fat, low fibre, moderate protein. Fluids: 5–10 ml/kg in the 2–4 hours before. Closer to start = smaller and simpler — half an hour out, a banana is enough.

ACSM/AND/DC + ISSN: 1–4 g carbs/kg, 1–4 hours before for activity over ~60–90 min. Low end ≈ easy 1 h; high end ≈ long race/long run. For 70 kg recreational: 70–100 g carbs — a normal pasta plate.

 

Peso corporeo	Carboidrati prima di correre (1-4 g/kg)
55 kg	55-220 g
60 kg	60-240 g
70 kg	70-280 g
80 kg	80-320 g

 

Closer to the run = smaller and more digestible. Full meal 3–4 h; smaller 1–2 h; snack 30–60 min; under 10 min: nothing solid. Low fat/fibre, low–moderate protein eases gastric emptying (ACSM).

 

Anticipo	Cosa ci sta	Esempio concreto
3-4 ore	Pasto completo	Pasta con condimento leggero, una fonte proteica magra, poca verdura
1-2 ore	Pasto ridotto	Un piatto di pasta piccolo, oppure pane e marmellata con uno yogurt
30-60 minuti	Solo spuntino	Una banana, due gallette, un po' di frutta essiccata
Meno di 10 minuti	Niente di solido	Acqua, eventualmente qualcosa di liquido e zuccherino

 

Early runs: refill liver glycogen after the overnight fast. One hour: oats or bread + jam + yogurt. Half hour: banana + crackers. Ten minutes: something liquid and sweet. Can't eat? Shift carbs to dinner and take a sweet drink on waking.

 

1. Un'ora piena: fiocchi d'avena con latte e frutta, oppure pane con marmellata e uno yogurt.

2. Mezz'ora: una banana e due gallette, oppure del pane con un velo di miele.

3. Dieci minuti: qualcosa di liquido e zuccherino, per esempio un succo di frutta.

 

Eating first clearly helps aerobic work over 60 minutes; shorter sessions show little difference (Aird 2018). Fasted exercise doesn't increase long-term fat or weight loss vs fed (Hackett 2017). Feel good fasted? Fine. Doing it for "more fat burn"? You're trading energy for an unproven edge.

Carb loading is for events over 90 minutes. A 10K for most people stays under that: carb-rich dinner the night before, digestible breakfast 2–3 hours before — no last-minute experiments. Loading becomes a topic from the half marathon up.

GI issues hit ~30–50% of endurance athletes (de Oliveira 2014) — more in runners than cyclists due to repeated stomach jostling. Practical: cut fibre before race day, avoid fructose-only drinks, stay hydrated, rehearse fueling in training. Precaution, not a physical law.

Yes: ready carbs, little fibre, almost no fat — perfect snack ~30 min out. Medium banana ≈ 17 g carbs: enough for a short run, not a long one. Studies comparing banana to sports drink are about cycling during effort, not pre-run meals.

Under 45 min: none. 45–75 min: small amounts / mouth rinse. 1–2.5 h: 30–60 g/hour. Over 2.5–3 h: up to 90 g/hour (ACSM). Practice in training.

 

Durata dell'attività	Carboidrati durante
Meno di 45 minuti	Non servono
45-75 minuti	Piccole quantità, anche il solo risciacquo della bocca
1-2,5 ore	30-60 g all'ora
Oltre 2,5-3 ore	Fino a 90 g all'ora

 

Daily carbs track training load: 3–5 light, 5–7 ~1 h/day, 6–10 endurance 1–3 h, 8–12 extreme. For 70 kg / 1 h: 350–490 g/day. Chronically under-fueling doesn't make you leaner — it makes you tired.

 

Carico di allenamento	Carboidrati al giorno
Attività leggera o tecnica	3-5 g/kg
Circa un'ora al giorno	5-7 g/kg
Programma di endurance, 1-3 ore al giorno	6-10 g/kg
Impegno estremo, oltre 4-5 ore al giorno	8-12 g/kg

 

Many carbs, little fat/fibre, digestible, easy to weigh. miscusi spaghetti ≈ 86 g carbs (~1.2 g/kg for 70 kg). Semolina with legumes: 17+ g protein. Higher-fibre shapes: great 3 h out, less ideal 30 min out.

A pasta plate ~3 hours before, lightly topped. Our Superpasta: fresh, eggless, bronze-die. Menu or make your own. Train late afternoon? Lunch is your pre-race — book a spot.

What should you eat before going for a run?

Easy-to-digest carbs, low fat, low fibre, moderate protein. For runs over an hour: 1–4 g carbs/kg, 1–4 hours before. A lightly topped pasta plate three hours out is the most practical option; half an hour before, a banana is enough.

 

How long before running should you eat?

One to four hours, depending on meal size. Full meal 3–4 h before, smaller 1–2 h, light snack 30–60 min. Personal tolerance matters — test it in training.

 

What to eat in the morning before a run?

Digestible carbs with a little protein: oats with milk and fruit, or bread with jam and yogurt. Short on time: fruit and two crackers. Main job: refill liver glycogen after the overnight fast.

 

Better to run fasted or after eating?

For runs over 60 minutes, eating first improves performance; under that, little difference. Fasted running doesn't increase long-term fat loss — that depends on overall calorie balance. Diabetes or altered blood sugar: talk to your doctor first.

 

What to eat before a 10K?

A carb-rich dinner the night before and a digestible breakfast 2–3 hours before start. Carb loading isn't needed — guidelines reserve it for events over 90 minutes. Under that, general fueling at 7–12 g/kg in the prior 24 hours is enough.

 

Is a banana OK before running?

Yes — one of the best snacks in the half hour before: ready carbs, very little fibre, almost no fat. A medium 150 g banana (with peel) ≈ 17 g carbs — enough for a short run, not a long one or a full pre-race meal.

 

What not to eat before running?

Fried food, fatty sauces and dairy, whole legumes, big raw salads, fructose-only products and very large portions. They slow gastric emptying and are the first things to cut if you get GI issues while running.

 

How many carbs per day does a runner need?

Depends on volume: 3–5 g/kg light, 5–7 for ~1 h/day, 6–10 for endurance 1–3 h/day. For 70 kg running an hour a day: 350–490 g carbs.

 

1. Thomas DT et al., Nutrition and Athletic Performance (ACSM/AND/DC), 2016 — dietitians.ca

2. Kerksick CM et al., ISSN position stand: nutrient timing, 2017 — springer

3. Aird TP et al., Effects of fasted vs fed-state exercise, 2018 — pubmed

4. Hackett D, Hagstrom AD, Overnight Fasted Exercise, 2017 — mdpi

5. de Oliveira EP et al., Gastrointestinal Complaints During Exercise, 2014 — PMC4008808

6. Pugh JN et al., Gastrointestinal Symptoms during a Marathon, 2018 — pubmed

7. CREA, Tabelle banane fresche — alimentinutrizione.it

8. Nieman DC et al., Bananas as an Energy Source during Exercise, 2012 — PLoS ONE

9. miscusi, analisi nutrizionale interna del menu, 2026