متنبئ زمن السباق.

Predictions assume suitable training; marathon predictions from short races are often optimistic. Everything is calculated in your browser; nothing you type is uploaded.

Riegel’s formula T₂ = T₁ × (D₂ ÷ D₁)^1.06.

A 48:30 10 km predicts 23:16 for 5 km and 1:47:01 for a half marathon.