Marathon
Marathon predictor
Estimate your marathon from 5K/10K, zone 2 and weekly km. Includes pace blocks and a realistic range for sharing.
- Explicit low-volume penalty
- Heavier weight on 10K marks
- Pace blocks through the wall
- Share-ready result
Enter your marks and calculate to see estimated time, pace, splits and equivalents.
How we estimate your marathon
Marathons amplify volume and pacing errors. We extrapolate across distances, apply experience fade and calibrate with zone 2. Still indicative — the in-app predictor adds real fatigue, consistency and readiness.
Indicative estimate based on pace and fatigue models. It does not replace a plan with real history, recent tests, or race-day conditions (heat, elevation, HYROX penalties).
I want the predictor with my real history
Create a free account · Pro uses your athlete memory