· Free tools · Pace calculator

Running Pace Calculator

Type in a distance and a time, or a distance and a pace. You get your pace per kilometre, your speed in km/h, and an estimate for the other race distances.

Free. No sign-up. Runs in your browser, nothing is saved.

How this works

Pace is the time one kilometre takes. Speed in km/h is 60 divided by your pace in minutes per km, so 6:00 per km is 10 km/h. The race estimates use the Riegel formula, a standard rule of thumb: time at the new distance equals your time times the distance ratio to the power 1.06. It assumes you have trained for the longer distance, so treat it as a guide, not a promise.

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Treqz Run logs your pace on every run and turns your loops into territory on the map. It opens soon.

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Quick questions

What is a good running pace?

It depends on your fitness, age, hills and weather. Compare yourself with your own earlier runs rather than with other people.

How do I turn pace into speed?

Divide 60 by your pace in minutes per km. A pace of 5:00 per km is 12 km/h, and 6:00 per km is 10 km/h.

How accurate are the race estimates?

They are a rule of thumb for runners who have trained for the longer distance. A marathon estimate from a 5K time is the least reliable.

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