Features
- Personalized carb targets based on your goal time
- Gel timing schedule with exact mile markers
- Sodium and electrolyte requirements
- Choose your preferred gel brand
- Printable race day fueling card
How It Works
Enter a realistic marathon time and the intake you have practiced. The planner converts product serving sizes and timing preferences into a schedule. It does not measure individual tolerance, sweat rate or medical needs.
Benefits
- Avoid the dreaded 'wall' with proper fueling
- Practice race-day nutrition in training
- Know exactly when and what to consume
- Prevent GI distress with gradual intake
Frequently Asked Questions
How many gels do I need?
Typically 4-7 gels for a marathon, depending on your pace and carb tolerance. Faster runners need more carbs per hour.
When should I start taking gels?
We recommend starting at 30-45 minutes into the race, before you feel fatigued, to stay ahead of your energy needs.
Try Marathon Fueling Calculator Free
Manual calculators work immediately. Connected analysis requires sign-in and available Strava data.
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