Running pace·3:34 /km
3:34
/km · 16.82 km/h

3:34 per km — marathon in 2:30:30, 16.82 km/h

Running 3:34 per kilometre is 16.82 km/h. Hold it and the half comes in at 1:15:15, the marathon at 2:30:30.

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
17:50
10K
35:40
Half
1:15:15
Marathon
2:30:30
Speed
16.82 km/h
Metres per second
4.673 m/s
Pace per mile
5:44
One lap (400 m)
1:26

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

Nearby paces

Pace per kmHalfMarathon
3:291:13:292:26:59
3:301:13:502:27:41
3:311:14:122:28:23
3:321:14:332:29:05
3:331:14:542:29:48
3:341:15:152:30:30
3:351:15:362:31:12
3:361:15:572:31:54
3:371:16:182:32:36
3:381:16:392:33:19
3:391:17:002:34:01

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 3:34 per km give?

2:30:30. The half comes in at 1:15:15, the 10K at 35:40 and the 5K at 17:50.

Q. How fast is 3:34 per km in km/h?

16.82 km/h, or 4.673 metres per second.

Q. What is that per mile?

5:44, because a mile is 1.609344 km.

Q. And one lap of the track?

1:26 for 400 m.