How to Run a Sub 1 Hour 50
Half Marathon.

Pace, splits & training plan for a sub 1:50 half marathon.

What pace is a 1:50 half marathon?

A 1:50 half marathon is a pace of 5:13 per kilometre (8:23 per mile), or 11.5 km/h (7.2 mph).

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Start the 1:50 half marathon training plan

Pace /km

5:13

min/km

Pace /mile

8:23

min/mi

Speed

11.5

km/h

Speed

7.2

mph

Splits every 5 km.

For an even-paced 1:50 half marathon, run 5:13 per km: 26:04 at 5 km, 52:08 at 10 km, 1:18:12 at 15 km, 1:44:17 at 20 km and 1:50:00 at the 21.1 km finish.

Checkpoint Time
5 km 26:04
10 km 52:08
15 km 1:18:12
20 km 1:44:17
21.1 km 1:50:00

1:50 Half Marathon splits.

KM Cumulative Time
1 5:13
2 10:26
3 15:38
4 20:51
5 26:04
6 31:17
7 36:30
8 41:43
9 46:55
10 52:08
11 57:21
12 1:02:34
13 1:07:47
14 1:13:00
15 1:18:12
16 1:23:25
17 1:28:38
18 1:33:51
19 1:39:04
20 1:44:17
21 1:49:29
21.0975 1:50:00
Mile Cumulative Time
1 8:23
2 16:47
3 25:10
4 33:34
5 41:57
6 50:21
7 58:44
8 1:07:08
9 1:15:31
10 1:23:55
11 1:32:18
12 1:40:41
13 1:49:05
13.11 1:50:00

Get the 12-week plan on Garmin, Coros, Apple Watch, Apple Health and Health Connect.

Race, tempo and interval paces from the matching 1:50 half marathon training plan, plus two real weeks already on it.

Race

5:13

min/km

Tempo

4:48–5:18

min/km

Intervals

4:14–4:36

min/km

Week 3 50.3 km 16 km long run 5 runs
Monday

Rest

Tuesday

Ladder Intervals

4:02 - 4:21 / km

Wednesday

Easy 11km

5:33 - 6:03 / km

Thursday

Tempo

4:35 - 5:05 / km

Friday

Rest

Saturday

Easy 5km

5:33 - 6:03 / km

Sunday

Long Run 16km

5:48 - 6:33 / km

Week 10 59.5 km 24 km long run 5 runs
Monday

Rest

Tuesday

Intervals

4:02 - 4:21 / km

Wednesday

Easy 11km

5:33 - 6:03 / km

Thursday

Progression

4:35 - 5:05 / km

Friday

Rest

Saturday

Easy 5km

5:33 - 6:03 / km

Sunday

Progression

5:48 - 6:33 / km

Start the 1:50 half marathon training plan

What does this pace feel like?

Running 5:13 per kilometre for 21.1 km is a strong recreational effort — the natural next step once the 2-hour barrier has fallen. The pace is brisk enough that talking is limited to short phrases, and the race genuinely begins around 16 km, when holding form and rhythm becomes a mental job as much as a physical one.

Adjust your target.

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Related.

Aiming faster?

Sub 1:45 Half Marathon Pace Guide

Training plans

Half Marathon Running Plans

Need more time?

Sub 2:00 Half Marathon Pace Guide

Aiming for sub 2 hours? See the sub 2 hour half marathon training plan.

Back to Pace Calculator

FAQs.

Is 1:50 a good half marathon time?

Yes. Breaking 1:50 means holding 5:13/km (8:23/mi) for the full 21.1 km — comfortably quicker than the typical recreational finisher and a clear step beyond the 2-hour milestone.

What 10K time predicts a 1:50 half marathon?

A 10K around 49:30–50:30 suggests you have the speed for 1:50, provided your long run has built the endurance to hold it.

How do I get from 2 hours to 1:50?

Add one quality session per week and extend your long run to 16–19 km. The 10 minutes comes from aerobic strength, not sprinting — tempo runs at 5:25–5:35/km do most of the work.

What are the splits for a 1:50 half marathon?

For an even-paced 1:50 half marathon, run 5:13 per km: 26:04 at 5 km, 52:08 at 10 km, 1:18:12 at 15 km, 1:44:17 at 20 km and 1:50:00 at the 21.1 km finish.