Running pace calculator
Enter a distance and your time. The calculator shows your pace, your speed and predicted times for the classic race distances.
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🔒 Runs entirely in your browser – nothing you enter is uploaded or stored.
How to use it
- Choose a distance or enter your own.
- Enter the time you ran or want to run.
- Read pace and speed and the predicted times for other distances.
Last checked: October 2026 · Based on: Riegel formula (1981). Found a mistake? Use the form below – we fix confirmed errors and update the date.
Frequently asked questions
What is a good running pace?
Many recreational runners run between 5:30 and 7:00 min/km on easy runs. Your pace depends on fitness, terrain and goal.
How accurate are the predicted race times?
The Riegel formula is a well-known estimate. It works best between similar distances and when you have trained for the longer race.
How do I convert km/h into pace?
Divide 60 by your speed: 12 km/h equals a pace of 5:00 min/km.