Cycling Nutrition / Fueling Plans / Bonking
How to choose between 15, 20, 30, or 45 minute fueling intervals on the bike. 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.
A practical way to think about it
- Shorter intervals can make servings smaller and easier on the gut.
- Longer intervals can be simpler but may require larger servings.
- The right interval depends on carb target, product size, and stomach comfort.
Use timing as an execution tool
Timing does not need to be perfect to be useful. A schedule helps you avoid the common mistake of waiting until hunger, fading power, or mental fog tells you that you are already behind. If you miss a window, resume calmly and adjust based on gut comfort instead of forcing a large catch-up dose.
Where this fits in race preparation
BonkGuard is a race-day fueling planner, not a daily food tracker or a substitute for qualified nutrition or medical guidance. Athletes use their event details, editable targets, selected fuel, and bottles to build a plan they can review, pack, and practice.
Overview reports Planned intake from the saved schedule and prepared bottles; it does not claim to record what was consumed. Schedule, Packing, Practice this plan, and the Race Ready review keep the focus on preparation and athlete control.
Useful next reads
- Beginner’s Guide to Cycling Nutrition
- Advanced Guide to Cycling Fueling
- How to Avoid Bonking on Long Bike Rides
- How Many Carbs Per Hour Do Cyclists Need?
- Century Ride Fueling Plan: What to Eat and Drink for 100 Miles
- How to build a complete race-day fueling plan
Key takeaway
Shorter intervals can make servings smaller and easier on the gut. 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.