6:48 per km — marathon in 4:46:56, 8.82 km/h

Running 6:48 per kilometre is 8.82 km/h. Hold it and the half comes in at 2:23:28, the marathon at 4:46:56.

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: 34:00
10K: 1:08:00
Half: 2:23:28
Marathon: 4:46:56

Speed: 8.82 km/h
Metres per second: 2.451 m/s
Pace per mile: 10:57
One lap (400 m): 2:43

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

Nearby paces

Pace per km	Half	Marathon
6:43	2:21:42	4:43:25
6:44	2:22:03	4:44:07
6:45	2:22:24	4:44:49
6:46	2:22:46	4:45:31
6:47	2:23:07	4:46:13
6:48	2:23:28	4:46:56
6:49	2:23:49	4:47:38
6:50	2:24:10	4:48:20
6:51	2:24:31	4:49:02
6:52	2:24:52	4:49:44
6:53	2:25:13	4:50:27

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 6:48 per km give?

4:46:56. The half comes in at 2:23:28, the 10K at 1:08:00 and the 5K at 34:00.

Q. How fast is 6:48 per km in km/h?

8.82 km/h, or 2.451 metres per second.

Q. What is that per mile?

10:57, because a mile is 1.609344 km.

Q. And one lap of the track?

2:43 for 400 m.