Running Race Predictor

Predict race times at common distances using a known result and Riegel scaling.

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What This Calculator Does

Predict race times at common distances using a known result and Riegel scaling.

It combines Known Race Distance, Known Time, Target Distance to estimate Predicted Time, Predicted Pace.

Formula & Method

Core equations: Riegel prediction: T_2=T_1\left(\frac{D_2}{D_1}\right)^{1.06}.

Notation used in the formulas: R = Predicted Time; x_{1} = Known Race Distance; x_{2} = Known Time; x_{3} = Target Distance.

Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.

Use this calculator for quick scenario analysis. Start with baseline values, change one driver at a time, and compare how sensitive the results are to each input shown above.

Inputs Used

Known Race Distance: Used directly in the calculation.
Known Time: Used directly in the calculation.
Target Distance: Used directly in the calculation.

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