Race plan calculator

Start with a generic marathon or half marathon, then connect a course if you want your plan aligned to aid stations.

Start 7-day trial
Race setup
How it works: Pick a race type for the correct distance, then optionally connect a course. Without a course, MAVR builds a time-based plan from your pace, gel, carb target, body metrics, weather, and sweat profile. With a course connected, the plan lines up fuel and water with known aid stations.
Gel selection

Recommended: 92g/h based on your profile

Personal metrics
Race conditions
Est. finish 3h 52m·42.2 km·25g/gel · with water

Turn race-day math into a week of nutrition decisions.

The trial is built around the first 7 days: connect training, log food, set fuel kits, review race plans, and use Kai to adjust meals around workouts and race prep.

Download on the App Store
Race-week carb loading and tomorrow-prep prompts
Fuel-kit setup with gels, chews, drink mix, and bars
Workout-aware meal timing before and after training
Kai coaching for GI issues, fueling questions, and race execution