Half marathon in 1 hour 45 minutes
To run a Half marathon in 1 hour 45 minutes you need to hold 4:59 per km, or 8:01 per mile. That is 12.1 km/h (7.5 mph), a fast pace that takes consistent training, often with some speed work.
- Pace /km4:59
- Pace /mile8:01
- Speed12.1 km/h
Kilometre splits
| km | 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 |
| Half marathon | 1:45:00 |
Mile splits
| Mile | 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 |
| Half marathon | 1:45:00 |
The same fitness, other races
| Race | Predicted |
|---|---|
| 5K | 22:50 |
| 10K | 47:35 |
| Marathon | 3:38:55 |
Riegel’s formula, with training for each distance. Try yours.
How to get there
Run most of your runs slower than 4:59 per km, at a pace where you can talk. Speed comes from consistency: two or three runs a week, every week, for months. Once you can run the distance comfortably, one run a week with a few faster minutes is enough to bring the time down.
On race day start a little slower than 4:59 per km for the first few kilometres, then settle in. Starting too fast is the most common way to miss a goal time.
Questions
What pace do I need to run a Half marathon in 1 hour 45 minutes?
4:59 per kilometre, or 8:01 per mile. That is 12.1 km/h (7.5 mph) on a treadmill.
Is a 1:45:00 Half marathon good?
It is a fast pace that takes consistent training, often with some speed work. Every finish is a good time for a first race: what matters is getting to the start line healthy.