Splits for a 1:20 half marathon
The race clock at each marker at even pace, the steadiest way to run it.
| Kilometres | Race clock |
|---|---|
| 5 km | 18:58 |
| 10 km | 37:55 |
| 15 km | 56:53 |
| 20 km | 1:15:50 |
| Finish | 1:20:00 |
| Miles | Race clock |
|---|---|
| 1 mi | 6:06 |
| 5 mi | 30:31 |
| 10 mi | 1:01:02 |
| 13.1 mi | 1:20:00 |
Print a pace band for 1:20:00, with the race clock at every kilometre or mile.
What a 1:20 half marathon takes
Riegel’s formula, the one Run 42 uses for every pace in your plan, puts these times on the same level:
- 5K · 17:23
- 10K · 36:15
- Marathon · 2:46:48
A recent 10K faster than 36:15 says the speed is there; the long runs of a plan build the rest. Slower than that, the race time predictor gives a goal to start from.
Training paces for a 1:20 half marathon
These are the paces Run 42 puts in a plan for this goal.
Most of the week is easy running; threshold and VMA come in one or two sessions a week. See training pace zones for what each one does.
How a 1:20 half marathon ranks
A 1:20 finish is faster than 100% of finishers: top 2% among men and top 1% among women, from 35 million race results analysed by RunRepeat. See Average half marathon time.
Train for 1:20
Run 42 builds a plan for this goal to your own race day, with every session at these paces. See how a half marathon plan is built.
Other goal times
Every goal from 1h15 to 2h45 in the half marathon pace chart
Frequently asked
What pace is a 1:20 half marathon?
3:47 per km, or 6:06 per mile, held for the whole 21.1 km: 15.8 km/h.
What is the 10 km split for a 1:20 half marathon?
37:55 at even pace, and 56:53 at 15 km.
What 10K time do I need for a 1:20 half marathon?
About 36:15, by Riegel’s formula. A 5K of about 17:23 points to the same half, which in turn points to a marathon of about 2:46:48.
Is a 1:20 half marathon good?
It is faster than 100% of finishers: top 2% among men and top 1% among women.
