Quick summary:
- ⚡ Nutritional preparation begins several days before the race: hydration, appropriate diet and carbohydrate load.
- 🥗 Reduce fiber and fat 48 hours before to limit digestive risks and keep digestion smooth.
- 💧 Hydrate well from 3 days before the competition and do not try new foods before the competition.
Why prepare your nutrition before a race?
Nutritional preparation isn't limited to the last meal before the race. It begins several days before the event and is an integral part of the performance strategy. The objective is threefold:
- Optimize energy reserves to have a full tank on the big day.
- Limit digestive risks through a suitable diet.
- Ensure optimal hydration to prevent dehydration and heatstroke.
The 3 components of nutritional preparation
1. Gradual hydration
Starting three days before the event, it is advisable to drink regularly to ensure good hydration at the beginning. Water rich in sodium can be helpful for promoting water retention, especially in hot weather.
👉 The classic mistake: drinking 2 liters of water the night before. Too late, and risks bloating. It's better to spread out your intake.
2. Adapt your diet
In the 48 hours before the race, the goal is to reduce the digestive load. To do this:
- ✔️ Reduce insoluble fiber (raw vegetables, legumes, whole grains).
- ✔️ Limit heavy fats (fatty cheeses, fried foods, processed meats).
- ✔️ Favor easily digestible carbohydrates : rice, white pasta, potatoes, white bread.
👉 This adaptation helps to reduce intestinal volume and avoid digestive discomfort during running.
3. Carbohydrate load
Carbohydrate loading involves moderately increasing carbohydrate intake in the 36 to 72 hours preceding a long race (see dedicated article). This helps to saturate muscle and liver glycogen stores.
Official recommendations (Burke et al., 2011): 8 to 12 g of carbohydrates/kg/day for 2 to 3 days before competition.
Scientific recommendations
A study published in the International Journal of Sport Nutrition (2019) confirms the importance of a simple strategy:
- Stabilize caffeine intake → no excess or abrupt suppression.
- Don't try anything new in the last week → no “miracle superfoods”.
- Maintaining your eating habits → to guarantee optimal tolerance on the big day.
Practical guide: common mistakes and best practices
| Good practice ✅ | Common mistake ❌ |
|---|---|
| Gradual hydration starting 3 days prior | Drinking too much water just the day before |
| Reduce fiber and fat intake 48 hours beforehand | Eating raw vegetables or fatty meals the day before |
| Moderately increase carbohydrates | To gorge oneself on pasta the night before |
| Test the strategy in practice | Change your diet during race week |
Practical field advice
- Plan your diet from D-3 → hydration, menus with reduced fiber, progressive carbohydrate intake.
- Eat smaller, more frequent meals to avoid feelings of heaviness.
- Avoid trying new foods → stick to what you know.
- Add a little sodium if the race takes place in the heat.
- Prepare your protocol as an integral part of your training.
FAQ – Pre-race nutritional preparation
How long before a race should I start nutritional preparation?
From D-3: progressive hydration, more digestible menus, and carbohydrate loading to saturate energy reserves.
Do I need to completely change my diet the week before the race?
No. It's better to maintain your current eating habits and simply adjust your fiber, fat, and carbohydrate intake. Avoid trying new foods.
Should you drink a lot of water the day before?
No. Hydration should be gradual. Drinking only the night before is not effective and can even disrupt sleep.
Conclusion
Nutritional preparation before an event is an integral part of your performance strategy. It requires anticipation, planning, and testing beforehand. Gradual hydration, appropriate nutrition, and carbohydrate loading are the three pillars that will allow you to arrive fresh, energized, and ready to perform.
👉 At COOKNRUN, we often say: nutrition is your ally . Preparing your body beforehand gives you every chance to be GOOD ANYWHERE.
