Running pace·3:30 /km
3:30
/km · 17.14 km/h

3:30 per km — marathon in 2:27:41, 17.14 km/h

Running 3:30 per kilometre is 17.14 km/h. Hold it and the half comes in at 1:13:50, the marathon at 2:27:41.

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
17:30
10K
35:00
Half
1:13:50
Marathon
2:27:41
Speed
17.14 km/h
Metres per second
4.762 m/s
Pace per mile
5:38
One lap (400 m)
1:24

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
3:251:12:052:24:10
3:261:12:262:24:52
3:271:12:472:25:34
3:281:13:082:26:17
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

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 3:30 per km give?

2:27:41. The half comes in at 1:13:50, the 10K at 35:00 and the 5K at 17:30.

Q. How fast is 3:30 per km in km/h?

17.14 km/h, or 4.762 metres per second.

Q. What is that per mile?

5:38, because a mile is 1.609344 km.

Q. And one lap of the track?

1:24 for 400 m.