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Running tools.
Small calculators for planning a marathon or half marathon: what pace to run, what time to aim for, and where it could get you in.
- Time ↔ pacePace calculatorYour goal time as a pace per km and per mile, with even splits at every 5 km. Or start from a pace and see your finish time.
- Riegel's formulaRace time predictorEstimate your marathon and half marathon times from a recent 5K, 10K, half or any other distance.
- StandardsQualifying timesThe times races with qualifying standards ask for, by age and gender.
Got a goal? Browse flat, fast marathons or half marathons to run it at.