Why Nutrition on the Bike Is Non-Negotiable
You can have perfect training, ideal equipment, and great fitness — but if you get your nutrition wrong on a long ride, none of it matters. Bonking (hitting the wall through glycogen depletion) is one of the most avoidable performance disasters in cycling, and yet it happens to riders at all levels. Getting your fueling right transforms long rides from survival efforts into genuine training gains.
The Energy Basics: What Your Body Uses While Cycling
Your muscles primarily run on two fuel sources: carbohydrates (stored as glycogen in muscles and the liver) and fat. At lower intensities, fat contributes more energy. As intensity rises, your body increasingly relies on glycogen. The problem: glycogen stores are limited — typically enough for roughly 60–90 minutes of hard effort. After that, you need to eat.
Before the Ride: Pre-Ride Fueling
What you eat in the 2–3 hours before a ride significantly affects your performance. Aim for a meal that is:
- Rich in complex carbohydrates (oats, bread, rice, pasta)
- Moderate in protein
- Low in fat and fibre (both slow digestion and can cause GI discomfort on the bike)
Example pre-ride meals: porridge with banana and honey, rice cakes with eggs, wholegrain toast with peanut butter and a piece of fruit.
If riding early and can't face a full meal, a banana and a coffee can get you through efforts under 90 minutes. For anything longer, eat properly.
During the Ride: The Fueling Window
For rides under 60–75 minutes, most riders don't need to eat on the bike. Water is usually sufficient. For longer rides:
Carbohydrate Targets
- 60–90 min rides: 30–40g of carbohydrate per hour
- 2–3 hour rides: 60–70g of carbohydrate per hour
- 3+ hour rides or racing: Up to 90g per hour (using a glucose/fructose mix to maximise gut absorption)
Real Food vs Gels vs Bars: What to Eat
| Option | Pros | Cons |
|---|---|---|
| Energy gels | Fast-absorbing, easy to carry | Can cause GI issues if overused; can be expensive |
| Energy bars | Palatable, longer energy release | Slower absorption; harder to eat at high intensity |
| Bananas | Natural, cheap, easy on the gut | Bulkier to carry |
| Rice cakes / homemade food | Used by pros for good reason; gut-friendly | Requires preparation |
| Dried dates/figs | Dense carbs, natural, tasty | Can be sticky, messy |
The best fueling strategy is the one you'll actually follow. If gels make you feel sick, use real food. The goal is consistency and regularity — eat before you're hungry, drink before you're thirsty.
Hydration: More Than Just Water
Sweat rates vary significantly between riders and conditions, but a general guideline is 500–750ml per hour in moderate conditions, more in heat. Electrolyte loss — particularly sodium — matters on longer rides.
- Add electrolyte tablets or powder to one of your bottles on rides over 90 minutes.
- In hot weather, increase sodium intake to prevent cramping and hyponatremia.
- Caffeinated gels or drinks can improve alertness and perceived effort on long rides — useful in the final third of a sportive or long training day.
Post-Ride Recovery Nutrition
The 30–60 minute window after a hard ride is critical for replenishing glycogen and starting muscle repair. Aim for:
- A 3:1 or 4:1 carbohydrate-to-protein ratio
- Examples: chocolate milk, a recovery shake, rice with chicken, a bagel with eggs
- Rehydrate: weigh yourself before and after longer rides — every kilogram lost is approximately 1 litre of fluid to replace
The Bottom Line
Good cycling nutrition isn't complicated, but it does require intention. Plan your fueling before you leave the house, eat regularly on the bike regardless of hunger, and prioritise recovery nutrition as part of your training — not an afterthought. Your legs will thank you on the next ride.