Running Pace Calculator
Calculate your running pace per km and per mile, and your speed, from distance and finish time.
About this tool
Choose a race distance — 5K, 10K, half marathon or marathon — or enter your own, then type your finish time. The calculator shows your average pace per kilometre and per mile and your speed in km/h and mph.
Frequently asked questions
Pace is time divided by distance. A 5K in 25:00 is 25 ÷ 5 = 5:00 per km. Multiply the per-km pace by 1.609344 to get pace per mile (8:03 per mile).
A half marathon is 21.0975 km (13.1 miles) and a marathon is 42.195 km (26.2 miles).
You need to average faster than 5:41 per km, or 9:09 per mile — 14,400 seconds divided by 42.195 km is 341 seconds per km.
Divide 60 by the pace in minutes. A 5:00 per km pace is 60 ÷ 5 = 12 km/h, which is about 7.46 mph.
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