🛠 Run365 Development • Sprint 9 Development

Race Predictor Calculator

Estimate an equivalent performance at another supported race distance.

Your race result
Source time
Marathon pairings are limited by the V1 model.
Race prediction

Your predicted performance will appear here.

How this is calculated

Run365 uses your entered race performance and a bounded Riegel race-equivalency model to estimate an equivalent performance at another supported distance.

Equivalent fitness is assumed. Preparation for the target distance, conditions and race-day execution affect actual results, so the prediction is not a guarantee. Marathon predictions retain additional preparation guidance.