Running pace·5:09 /km
5:09
/km · 11.65 km/h

5:09 per km — marathon in 3:37:18, 11.65 km/h

Running 5:09 per kilometre is 11.65 km/h. Hold it and the half comes in at 1:48:39, the marathon at 3:37:18.

Finish times

These assume you hold the pace from gun to tape. Most runners drift slower in the second half, so leave a margin when setting a target.

5K
25:45
10K
51:30
Half
1:48:39
Marathon
3:37:18
Speed
11.65 km/h
Metres per second
3.236 m/s
Pace per mile
8:17
One lap (400 m)
2:04

What this pace breaks

The cut-offs are tighter than they look: a sub-4 marathon needs 5:41 per kilometre, and one second slower puts you over four hours.

sub-20 min 5K · nosub-25 min 5K · nosub-30 min 5K · yessub-50 min 10K · nosub-60 min 10K · yessub-100 min Half · nosub-2h Half · yessub-3h Marathon · nosub-3:30h Marathon · nosub-4h Marathon · yessub-5h Marathon · yes

Nearby paces

Pace per kmHalfMarathon
5:041:46:543:33:47
5:051:47:153:34:29
5:061:47:363:35:12
5:071:47:573:35:54
5:081:48:183:36:36
5:091:48:393:37:18
5:101:49:003:38:00
5:111:49:213:38:43
5:121:49:423:39:25
5:131:50:043:40:07
5:141:50:253:40:49

The half and the full are not round numbers

A marathon is 42.195 km and a half is 21.0975 km. Rounding to 42 km costs you about a minute at a 5:00 pace — small, but enough to miss a target.

How to read this

  • Pace is the time for one kilometre, so a smaller number means faster.
  • To get speed, divide 3600 by the pace in seconds: 300 s gives 12 km/h.
  • A finish time is simply the pace multiplied by the distance.
  • Mile pace is kilometre pace times 1.609344.

Frequently asked questions

Q. What marathon time does 5:09 per km give?

3:37:18. The half comes in at 1:48:39, the 10K at 51:30 and the 5K at 25:45.

Q. How fast is 5:09 per km in km/h?

11.65 km/h, or 3.236 metres per second.

Q. What is that per mile?

8:17, because a mile is 1.609344 km.

Q. And one lap of the track?

2:04 for 400 m.