GW ENDURANCE FUELING

Stop Bonking for Good

You’ve trained for months. But in the middle of your run or race your legs turn super heavy. You’ve bonked again.. All that work, wasted on a fueling plan that was just a guess.
I’ve been there way too many times. That’s why I built the GW Endurance Fueling Calculator, a science-based, easy-to-use tool that takes the guesswork out of fueling for both training and racing. I went deep into the research and created the tool I always wished existed, and now both I and the athletes I coach use it daily in our training and racing.

How It Works

1. Your Run, Your Body
Enter your key details: duration, intensity, body weight, gut tolerance, and temperature.

2. Choose Your Fuel
Select your favorite gels, drinks, chews, or bars from our massive product database.

3. Or Go DIY
Use the built-in Homemade Sports Drink Creator to get step-by-step guidance on mixing your own budget-friendly, science-optimized drink using simple ingredients.
It performs just as well as commercial options, fully tailored to your run, and can save you $15 or more per long run.

4. Get Your Plan
Instantly receive your complete fueling strategy with a visual timeline, gel schedule, and hydration plan, all based on real sports science.

5. Fine-Tune if You Want
Customize everything to match your preferences and products.

Why It Works

• Science-backed targets for carbs, fluids, sodium, and caffeine

• Adapts to you, from high-carb athletes to sensitive stomachs

• Smart hydration logic gives you enough to perform optimally, without overhydrating

• Massive product database so you can use the exact gels and drinks you already train with