5K Time Predictor

Predict your 5K finish time based on your recent races or time trials.

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Predicted Finish Times

5K Prediction -
10K Prediction -
Half Marathon Prediction -
Marathon Prediction -

*Based on Peter Riegel's endurance formula.

Setting your 5K Strategy

The 5K (3.1 miles) is physically intense compared to extended marathons. Predicting your time off a 10K or 1-mile time trial can help you prevent going out too fast in the first kilometer—the most common mistake newer runners make at this distance.

If your 1-mile time trial was 06:00, our system adapts that max aerobic capacity to the duration of the 5.0 kilometer effort to offer realistic finish splits.

Ready to execute your pacing? Utilize the Running Pace Calculator & Split Generator to view exactly when you need to hit each KM or mile boundary.

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