How long is a half marathon?

A half marathon is 21.0975 km (13.11 miles).

What pace is a 1:30 half marathon?

A 1:30 half marathon is 4:16/km (6:52/mi), 14.1 km/h.

What pace is a 1:45 half marathon?

A 1:45 half marathon is 4:59/km (8:01/mi), 12.1 km/h.

What pace is a 2:00 half marathon?

A 2:00 half marathon is 5:41/km (9:09/mi), 10.5 km/h.

How do I pick a half marathon goal time?

Start from a recent race: the equivalent times under the calculator estimate your half marathon from it with the Riegel formula. Then use the ladder to see what a minute faster or slower means per km.

Half marathon pace calculator

A half marathon is 21.0975 km (13.1 miles). Pick a goal time to see the pace per km and per mile, the splits, and the goal times either side of yours.

A 2:00:00 half marathon is 5:41/km (9:09/mi), 10.5 km/h.

Half marathon finish times around your target, in 30 seconds steps
Change	Time	Pace
−2:00	1:58:00	5:369:00
−1:30	1:58:30	5:379:02
−1:00	1:59:00	5:389:05
−0:30	1:59:30	5:409:07
Your target Finish time Pace /km
+0:30	2:00:30	5:439:12
+1:00	2:01:00	5:449:14
+1:30	2:01:30	5:469:16
+2:00	2:02:00	5:479:18

min/kmmin/mikm/hmph

Arrow keys nudge the value. Hold Shift for bigger steps.

Finish times at 5:41 per km

Finish time at this pace for each distance
Distance	Finish time
1K	5:41
1 mile	9:09
5K	28:26
10K	56:53
10 miles	1:31:32
Half marathon	2:00:00
Marathon	4:00:00
50K	4:44:24

Half marathon pace chart

Pace per km and per mile for each half marathon goal time. Each time links to its splits.
Goal time	min/km	min/mi	km/h
1:00	2:51	4:35	21.1
1:05	3:05	4:57	19.5
1:10	3:19	5:20	18.1
1:15	3:33	5:43	16.9
1:20	3:48	6:06	15.8
1:21	3:50	6:11	15.6
1:22	3:53	6:15	15.4
1:23	3:56	6:20	15.3
1:24	3:59	6:24	15.1
1:25	4:02	6:29	14.9
1:26	4:05	6:34	14.7
1:27	4:07	6:38	14.6
1:28	4:10	6:43	14.4
1:29	4:13	6:47	14.2
1:30	4:16	6:52	14.1
1:31	4:19	6:56	13.9
1:32	4:22	7:01	13.8
1:33	4:24	7:06	13.6
1:34	4:27	7:10	13.5
1:35	4:30	7:15	13.3
1:36	4:33	7:19	13.2
1:37	4:36	7:24	13.1
1:38	4:39	7:29	12.9
1:39	4:42	7:33	12.8
1:40	4:44	7:38	12.7
1:41	4:47	7:42	12.5
1:42	4:50	7:47	12.4
1:43	4:53	7:51	12.3
1:44	4:56	7:56	12.2
1:45	4:59	8:01	12.1
1:46	5:01	8:05	11.9
1:47	5:04	8:10	11.8
1:48	5:07	8:14	11.7
1:49	5:10	8:19	11.6
1:50	5:13	8:23	11.5
1:51	5:16	8:28	11.4
1:52	5:19	8:33	11.3
1:53	5:21	8:37	11.2
1:54	5:24	8:42	11.1
1:55	5:27	8:46	11.0
1:56	5:30	8:51	10.9
1:57	5:33	8:55	10.8
1:58	5:36	9:00	10.7
1:59	5:38	9:05	10.6
2:00	5:41	9:09	10.5
2:01	5:44	9:14	10.5
2:02	5:47	9:18	10.4
2:03	5:50	9:23	10.3
2:04	5:53	9:28	10.2
2:05	5:55	9:32	10.1
2:06	5:58	9:37	10.0
2:07	6:01	9:41	10.0
2:08	6:04	9:46	9.9
2:09	6:07	9:50	9.8
2:10	6:10	9:55	9.7
2:11	6:13	10:00	9.7
2:12	6:15	10:04	9.6
2:13	6:18	10:09	9.5
2:14	6:21	10:13	9.4
2:15	6:24	10:18	9.4
2:20	6:38	10:41	9.0
2:25	6:52	11:04	8.7
2:30	7:07	11:27	8.4
2:35	7:21	11:49	8.2
2:40	7:35	12:12	7.9
2:45	7:49	12:35	7.7
2:50	8:03	12:58	7.4
2:55	8:18	13:21	7.2
3:00	8:32	13:44	7.0

Splits

Negative splitEven pace all the way

Splits per km
km	Split	Elapsed
1	5:41	5:41
2	5:41	11:23
3	5:41	17:04
4	5:41	22:45
5	5:41	28:26
6	5:41	34:08
7	5:41	39:49
8	5:41	45:30
9	5:41	51:11
10	5:41	56:53
11	5:41	1:02:34
12	5:41	1:08:15
13	5:41	1:13:57
14	5:41	1:19:38
15	5:41	1:25:19
16	5:41	1:31:00
17	5:41	1:36:42
18	5:41	1:42:23
19	5:41	1:48:04
20	5:41	1:53:45
21	5:41	1:59:27
Final 0.098 km	0:33	2:00:00

Splits per mile
Mile	Split	Elapsed
1	9:09	9:09
2	9:09	18:18
3	9:09	27:28
4	9:09	36:37
5	9:09	45:46
6	9:09	54:55
7	9:09	1:04:05
8	9:09	1:13:14
9	9:09	1:22:23
10	9:09	1:31:32
11	9:09	1:40:41
12	9:09	1:49:51
13	9:09	1:59:00
Final 0.109 mi	1:00	2:00:00

Equivalent times at other distances

Estimate

Estimated times at other distances (Riegel formula)
Distance	Estimated time
5K	26:05
10K	54:23
10 miles	1:30:04
Marathon	4:10:12

These are estimates from the Riegel formula, T2 = T1 × (D2 ÷ D1)^1.06. They assume you’ve trained for the other distance, so treat them as a guide, not a promise.

Pace questions runners ask

How long is a half marathon?: A half marathon is 21.0975 km (13.11 miles).
What pace is a 1:30 half marathon?: A 1:30 half marathon is 4:16/km (6:52/mi), 14.1 km/h.
What pace is a 1:45 half marathon?: A 1:45 half marathon is 4:59/km (8:01/mi), 12.1 km/h.
What pace is a 2:00 half marathon?: A 2:00 half marathon is 5:41/km (9:09/mi), 10.5 km/h.
How do I pick a half marathon goal time?: Start from a recent race: the equivalent times under the calculator estimate your half marathon from it with the Riegel formula. Then use the ladder to see what a minute faster or slower means per km.