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Pace calculator

Your pace from a time, or your finish time from a pace.

Marathon pace chart

Marathon timePace per kmPace per mile
2:30:003:335:43
2:45:003:556:18
3:00:004:166:52
3:15:004:377:26
3:30:004:598:01
3:45:005:208:35
4:00:005:419:09
4:15:006:039:44
4:30:006:2410:18
4:45:006:4510:52
5:00:007:0711:27
5:15:007:2812:01
5:30:007:4912:35
5:45:008:1113:10
6:00:008:3213:44
6:15:008:5314:18
6:30:009:1514:52

Half marathon pace chart

Half marathon timePace per kmPace per mile
1:15:003:335:43
1:25:004:026:29
1:35:004:307:15
1:45:004:598:01
1:55:005:278:46
2:05:005:559:32
2:15:006:2410:18
2:25:006:5211:04
2:35:007:2111:49
2:45:007:4912:35
2:55:008:1813:21
3:05:008:4614:07
3:15:009:1514:52

10K pace chart

10K timePace per kmPace per mile
35:003:305:38
40:004:006:26
45:004:307:15
50:005:008:03
55:005:308:51
1:00:006:009:39
1:05:006:3010:28
1:10:007:0011:16
1:15:007:3012:04
1:20:008:0012:52
1:25:008:3013:41
1:30:009:0014:29

5K pace chart

5K timePace per kmPace per mile
16:003:125:09
18:003:365:48
20:004:006:26
22:004:247:05
24:004:487:43
25:005:008:03
26:005:128:22
28:005:369:01
30:006:009:39
32:006:2410:18
35:007:0011:16
40:008:0012:52
45:009:0014:29

What a 5K time predicts

5K10KHalf marathonMarathon, best case
20:0041:421:32:003:11:49
25:0052:071:55:003:59:47
30:001:02:332:18:004:47:44
35:001:12:582:41:005:35:41
40:001:23:243:04:006:23:39

Riegel's formula, T2 = T1 x (D2 / D1)^1.06. It was fitted to race efforts of a few minutes to a few hours; for recreational marathons it usually runs fast. More on its limits.

How long it takes to walk

DistanceAt 4 km/hAt 5 km/hAt 6 km/h
1 km15:0012:0010:00
5 km1:15:001:00:0050:00
10 km2:30:002:00:001:40:00
21.1 km5:16:304:13:123:31:00
42.2 km10:33:008:26:247:02:00

5 km/h is a steady walk, 6 km/h brisk. Test your walking speed.

Common questions

What pace is a 4 hour marathon?

A 4 hour marathon is 5:41 per kilometer, or 9:09 per mile, held for the whole 42.2 km.

What pace is a sub 2 hour half marathon?

A sub 2 hour half marathon needs faster than 5:41 per kilometer, or 9:09 per mile.

What pace is a 30 minute 5K?

A 30 minute 5K is 6:00 per kilometer, or 9:39 per mile.

How do I work out my running pace?

Running pace is your time divided by your distance. 50 minutes for 10 km is 5:00 per kilometer, which the calculator above does for any time.

How long does it take to walk 5 km?

Walking 5 km takes about 1 hour at a steady 5 km/h, and about 50 minutes at a brisk 6 km/h.

How accurate are race time predictions?

Race predictions from Riegel's formula are a good middle estimate for 5K to half. For the marathon most recreational runners finish slower than predicted, so treat it as a best case.

Health education, not medical advice.