Fueling Calculator
Build a race-day fueling plan in minutes, then track what works on your long runs.
Race inputs
Distance
Goal time
Body weight
Pace override (min:sec per mile)
Experience level
Conditions
Gel choice
Carb target (g/hr)Suggested range: 30-60g carbs/hr
Your fueling plan
1h 55mTotal time
8.8 min/miAvg pace
30-60g carbs/hrCarbs
55 g/hr targetTarget carbs
30-34 oz fluids/hrFluids
Selected gel
GU Original Energy Gel � 22g carbs � 100 kcal
Sodium 60 mg � Caffeine none mg
Carbs and sodium vary by flavor; caffeine-free and caffeinated options.
Every 24 minSchedule
- Mile 2.7 at 24 min: GU Original Energy Gel (22g carbs)
- Mile 5.5 at 48 min: GU Original Energy Gel (22g carbs)
- Mile 8.2 at 72 min: GU Original Energy Gel (22g carbs)
- Mile 10.9 at 96 min: GU Original Energy Gel (22g carbs)
Gel library
Pick a gel to update your schedule and see nutrition details.
Fueling log
Sign in to save fueling logs across devices.
Date
Run type
Distance
Duration
Rating
Notes
Future update: AI-driven recommendations based on your best logs.
Next tool: Training Plans