Free tool

The runner's toolkit.

Your pace, your times over other distances, your zones and your vVO2max: the calculations the coach runs, open to everyone. Free, no account needed.

• Pace Calculator

  Your pace, time or distance from the other two, plus your splits.

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• Race Time Predictor

  One race time gives you your estimated times for 5K, 10K, half marathon and marathon.

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• Training zones

  Your five pace zones from a race time, your five heart rate zones from your max HR.

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• VO2max Pace Calculator

  Your vVO2max from a Cooper or half-Cooper test, plus your paces from 60 to 105% of vVO2max.

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