Race predictor
Predict finish times for 5 km, 10 km, the half marathon and the marathon from a distance you have already raced.
Open calculatorPace is your finish time divided by distance. Speed in km/h is the inverse of pace — ideal when planning splits for a 5K, 10K, half marathon or marathon.
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No saved calculations yet. Use any calculator and your recent results will appear here.
Educational estimate only. Not medical, tax, legal or financial advice.