Race Time Predictor
Enter a recent race distance and time. We'll estimate your potential at other distances using the Riegel formula.
Predicted finish time52:07
Predicted pace / km5:13 /km
Predicted pace / mile8:23 /mi
How this works
Predictions assume you've trained appropriately for the target distance. A great 5K doesn't automatically mean a great marathon — endurance has to be built.
Want a plan built around these numbers?
Runallo turns your paces and goals into a weekly adaptive plan.
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