Methodology

VDOT calculator

Enter one race result. Get your VDOT fitness score, Easy / Marathon / Threshold / Interval / Repetition paces, and equivalent race times from 1500m to the marathon. Implements Daniels & Gilbert (1979).

Interactive · km/mi · Daniels' VDOT model

 Prediction

Race time predictor

Predict your time at every common distance from a single race result. Compares the Daniels VDOT model with Pete Riegel's empirical formula side-by-side, and explains when each one is right.

Interactive · km/mi · Daniels + Riegel

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