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RiverMath

Race predictor

Riegel’s rule: time scales with distance to the power 1.06. It assumes similar effort and no race tactics. A 10 km is a better base than a short time trial. This is not a training plan.

5 km · 4:48 / km
23:59
10 km · 5:00 / km
50:00
Half marathon · 5:14 / km
1:50:19
Marathon · 5:27 / km
3:50:01

10 km · 5:00 / km: 50:00

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An educational estimate. Not medical, tax or credit advice.

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