How to Run a Sub 1 Hour 45
Half Marathon.

Pace, splits & training plan for a sub 1:45 half marathon.

What pace is a 1:45 half marathon?

A 1:45 half marathon is a pace of 4:59 per kilometre (8:01 per mile), or 12.1 km/h (7.5 mph).

Pace /km

4:59

min/km

Pace /mile

8:01

min/mi

Speed

12.1

km/h

Speed

7.5

mph

1:45 Half Marathon splits.

KM Cumulative Time
1 4:59
2 9:57
3 14:56
4 19:54
5 24:53
6 29:52
7 34:50
8 39:49
9 44:48
10 49:46
11 54:45
12 59:43
13 1:04:42
14 1:09:41
15 1:14:39
16 1:19:38
17 1:24:36
18 1:29:35
19 1:34:34
20 1:39:32
21 1:44:31
21.0975 1:45:00
Mile Cumulative Time
1 8:01
2 16:01
3 24:02
4 32:02
5 40:03
6 48:03
7 56:04
8 1:04:05
9 1:12:05
10 1:20:06
11 1:28:06
12 1:36:07
13 1:44:07
13.11 1:45:00

Get the 12-week plan on Garmin or Coros.

Race, tempo and interval paces from the matching 1:45 half marathon training plan, plus two real weeks already on it.

Race

4:59

min/km

Tempo

4:35–5:05

min/km

Intervals

4:02–4:24

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 1:45 half marathon training plan

What does this pace feel like?

A 4:58/km pace for the half marathon sits just under the 5:00 mark — psychologically satisfying and physically demanding in equal measure. You'll be working throughout but should feel in control until the final 3–4 km, where maintaining pace requires genuine effort and determination.

Adjust your target.

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Get Your Free Half Marathon Training Plan

Dangelo builds you a personalized 12-week plan for your exact target time of 1:45. Every session synced to your watch.

Related.

Aiming faster?

Sub 1:40 Half Marathon Pace Guide

Training plans

Half Marathon Running Plans

Need more time?

Sub 1:50 Half Marathon Pace Guide

Back to Pace Calculator

FAQs.

Is a 1:45 half marathon a good time?

A sub-1:45 half marathon is an excellent time. At 4:58/km, you're running faster than the majority of half marathon participants.

How long should my long run be for a 1:45 half marathon?

Build your long run to 18–20 km. Run most of it at an easy pace, but practice finishing the last few kilometres at goal pace.