Pace Calculator

Distance and time in: pace per km and per mile, speed, and what that pace means for a 5K, 10K, half and marathon.

Pace

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Distance	Finish time at this pace

Common questions

How do I calculate running pace?

Pace = time ÷ distance. A 10 km run in 55:00 is 5:30 per km; per mile multiply by 1.609344, giving 8:51 per mile.

How do I convert pace to speed?

Speed = 60 ÷ pace in minutes. 5:30 per km is 10.9 km/h, or 6.8 mph.

What are the race distances?

5K = 5 km, 10K = 10 km, half marathon = 21.0975 km, marathon = 42.195 km (26.2 miles).

Pace = time ÷ distance; speed = distance ÷ time. 1 mile = 1.609344 km exactly (NIST). Finish times assume an even pace.

NIST Special Publication 811, Appendix B.8 — conversion factors: 1 mile = 1.609 344 km. www.nist.gov