Fuel Library / Cycling Nutrition / Race Day
How to avoid accidental caffeine stacking when using caffeinated gels. This guide is written for cyclists first, with notes that also apply to runners and triathletes when the same endurance-fueling principles carry over.
Good fueling is not about chasing a perfect number for its own sake. The goal is to deliver enough carbohydrate, fluid, and sodium for the session you are actually doing, using products and foods you can tolerate when the effort gets real.
Start with the math, then make it rideable
- Separate caffeinated and non-caffeinated products in the plan.
- Know caffeine per serving, not just carbs.
- Avoid using caffeine as a substitute for carbohydrate.
Set the carb target first
For many endurance rides, a useful starting range is roughly 30-60 grams of carbohydrate per hour for moderate sessions and 60-90 grams per hour for longer or harder events. Intakes above 90 grams per hour can work for some trained athletes, but they should be practiced gradually with multiple carbohydrate sources and products that sit well in your stomach.
The target should reflect ride duration, intensity, heat, your gut tolerance, and what you can realistically carry. A two-hour endurance ride and a five-hour event with climbs should not automatically use the same plan.
Choose fuels you can repeat
The best fuel is not always the most expensive or the most engineered. It is the option you can dose, carry, open, tolerate, and repeat. Drink mix, gels, chews, bars, pouches, rice cakes, potatoes, and other simple foods can all fit if you understand the carbs per serving and how they affect your stomach.
Use this in a BonkGuard race plan
Start on Race Day with the event date, distance, and expected finish time. Review editable carbohydrate and fluid targets, reveal optional sodium guidance when it is useful, then choose the foods, gels, chews, drink mixes, and bottles you expect to carry.
Use Overview to compare targets with Planned intake from the generated schedule and prepared bottles. Check Schedule for timing, Packing for quantities and bottle preparation, and Practice this plan for a shorter rehearsal before you decide the plan is Race Ready.
Useful next reads
- Beginner’s Guide to Cycling Nutrition
- Advanced Guide to Cycling Fueling
- How to Avoid Bonking on Long Bike Rides
- How to Build a Cycling Fueling Plan Before Your Ride
- Drink Mix vs Gels vs Chews vs Real Food: Which Is Best for Cycling?
- How to build a complete race-day fueling plan
Key takeaway
Separate caffeinated and non-caffeinated products in the plan. Build the plan around the full session, then keep the execution simple enough to follow when the ride gets hard.
Educational note
This article is educational and is not medical or nutrition-treatment advice. Athletes vary widely in tolerance, sweat rate, health history, and goals. Practice fueling and hydration changes in training, not for the first time on race day, and work with a qualified professional when you need individualized medical or nutrition guidance.