Running Pace Calculator

Work out your running pace per mile and per kilometre, and your average speed, from distance and time.

5K = 5 km, 10K = 10 km, half marathon = 21.0975 km, marathon = 42.195 km.

h
min
s
Pace per mile
9:10 /mi
Finish times at this pacemin
0501001502002501 mile — Finish time: 9.173 min1 mile5K — Finish time: 28.5 min5K10K — Finish time: 57 min10KHalf marathon — Finish time: 120.3 minHalf marathonMarathon — Finish time: 240.5 minMarathon
Pace per kilometre
5:42 /km
Average speed
6.54
Total time
28:30
Show the working
  1. Time = 1710 s; distance = 5.000 km = 3.107 mi
  2. Pace = 1710 s ÷ 5.000 km = 342.0 s/km = 5:42 /km
  3. Speed = 5.000 km ÷ 0.4750 h = 10.53 km/h

Runs entirely in your browser. Nothing you enter is uploaded.

Formula

Pace = time ÷ distanceSpeed = distance ÷ time1 mile = 1.609344 km

How it works

Pace is the time it takes to cover one unit of distance, usually written as minutes and seconds per mile or per kilometre. Runners prefer pace to speed because it maps directly onto a watch: if your target is 9:00 per mile, you know exactly where you should be at each mile marker.

Enter a distance and your finish time (or a goal time) to get the average pace and speed. Average pace hides variation — hills, wind and slowing down late in a race — so for racing, many runners aim for even or slightly faster second-half splits.

To convert between the two pace units, multiply a per-kilometre pace by 1.609 to get the per-mile pace, or divide a per-mile pace by 1.609 for per kilometre. A 5:00 /km pace is about 8:03 /mi.

Frequently asked questions

What is a good running pace?

It depends on age, experience and distance. Many recreational runners run easy miles at 9:00–12:00 per mile; competitive club runners may race 5Ks under 6:00 per mile.

How do I find the time needed for a target pace?

Multiply pace by distance. At 8:00 per mile, a 10K (6.21 miles) takes about 49:43.

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