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Running tools
Free calculators and reference times — pace, race predictions, and what actually counts as a good 5K or 10K.
Running pace calculator
Work out your pace per km or mile, your finish time, or the distance you covered. Free running pace calculator with 5K, 10K, half and marathon splits.
Race time predictor
Predict your 5K, 10K, half marathon or marathon time from a recent race. Free race time predictor using Riegel's formula, the standard endurance model.
What is a good 5K time?
What counts as a good 5K time in the UK, by ability rather than elite standards. Typical times for beginners through to club runners, and how to get faster.
What is a good 10K time?
What counts as a good 10K time in the UK. Typical finish times from beginner to club runner, why the sub-60 barrier matters, and how to get under it.
