Sub-1:40 Half Marathon Pace

To break 1:40:00 you need 4:44 per kilometer or 7:38 per mile (12.7 km/h, 7.9 mph). Set your own target below, then take the splits and a pace band to the start line.

Half marathon

14000

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Pace: 4:44 /km
Status: Sub-1:45 · 5:00 to spare

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Flick: Spin the tape. It lands on round times and snaps to nearby goals.
Drag down: Keep holding and pull away from the tape for ½, ¼ or fine speed.
Roll: Tap a digit on the bib, then drag it up or down.
Keys: ← → move five seconds, Shift moves a minute.

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Your pace band

Clock time at every marker. Print it, cut it, tape it to your wrist.

The same pace from start to finish.

Half marathon1:40:00
5K23:42
10K47:24
15K1:11:06
20K1:34:48
Finish1:40:00

If you can run 1:40:00

Equivalent race times from the Riegel formula. Longer-race predictions assume your endurance training matches.

5K21:44

10K45:19

Half marathon1:40:00

Marathon3:28:30

Workout paces

Interval targets based on your equivalent 5K effort.

Rep	Target
Mile	6:56–7:10
1000m	4:08–4:21
800m	3:14–3:25
400m	1:32–1:37
200m	0:40–0:44

Sub-1:40 half marathon splits

Even-pace clock times for a 1:40:00 half marathon. Holding 4:44 per kilometer finishes in 1:39:52; holding 7:37 per mile finishes in 1:39:51.

Kilometer splits at 4:44/km
5 km	23:42
10 km	47:24
15 km	1:11:06
20 km	1:34:48
Finish	1:40:00

Mile splits at 7:38/mi
Mile 1	7:38
Mile 2	15:15
Mile 3	22:53
Mile 4	30:31
Mile 5	38:08
Mile 6	45:46
Mile 7	53:24
Mile 8	1:01:02
Mile 9	1:08:39
Mile 10	1:16:17
Mile 11	1:23:55
Mile 12	1:31:32
Mile 13	1:39:10
Finish (13.1 mi)	1:40:00

Race times that go with a sub-1:40 half marathon

Riegel-formula equivalents for a 1:40:00 half marathon. If your weekly mileage is modest, aim for about 44:39 in the 10K rather than 45:19 before committing to this goal.

5K21:44

10K45:19

marathon3:28:30

Frequently asked questions

What pace is a 1:40 half marathon?

A 1:40:00 half marathon averages 4:44 per kilometer or 7:38 per mile. Holding 4:44 per kilometer finishes in 1:39:52, and 7:37 per mile finishes in 1:39:51.

What 10K time do I need for a sub-1:40 half marathon?

The Riegel formula lines up a 1:40:00 half marathon with about 45:19 for the 10K. A more conservative estimate for runners without high weekly mileage is about 44:39.

What is the halfway split for a sub-1:40 half marathon?

At even pace the halfway split is 50:00. Many runners aim to pass halfway a few seconds slower and finish with a small negative split.