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Running Pace & Race Time Predictor
Work out your running pace and speed from distance and time, and predict your 5K, 10K, half marathon and marathon times.
Tip from Tink: Predictions assume you've trained for the longer distance.
Pace per km
5:00
Pace per mile
8:03
Speed
12 km/h
Predicted race times
5K
25:00
10K
52:07
Half marathon
1:55:00
Marathon
3:59:47
Predictions use Riegel's formula and assume you've trained for the distance.
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How to use the Running Pace & Race Time Predictor
- Pick km or miles and enter the distance.
- Enter your finish time.
- See your pace and predicted race times.
Everything runs in your browser. Nothing you enter is uploaded.