♡ Health and fitness

Race time estimate

Compare times at different distances with the Riegel model.

Rules reviewed: 2026-10-13BS / EN
01

Your inputs

Starting values are an example. Replace them with your own.

Your inputs stay in your browser.

02

Your result

Enter your details and run the calculation.

METHOD

How it is calculated

T₂ = T₁ × (D₂ / D₁)^k, initial k = 1.07.