A 12-week plan for a sub-1-hour-20 half marathon at 3:47/km race pace, with 6 runs a week, building to a 67.8 km peak week and a 24 km long run.
Half marathon
3:47 /km
12 weeks
Premium
To run a Sub 1 Hour 20 Minute Half marathon, you need to maintain a race pace of approximately 3:47 min/km. Your training sessions will use the following paces:
3:29-3:59
4:23-5:12
3:04-3:26
This sub 1:20 half marathon training plan runs over 12 weeks. It is the 1:20 plan, the same goal people search as 1.20 or sub 1 hour 20. You can start at any point: do all 12 weeks or jump in wherever feels right.
Try our Sub 1 Hour 20 Minute Half marathon plan.A half-marathon is a big achievement, and for most normal human's getting there will take a lot of hard work. This plan will have you out on the road for 6 days a week if you complete all of the sessions. Of course in the real world this isn't always possible, so aim for a good mix of tempo work through the week but always carve out a couple of hours for the long run at the weekend. We've added more timed long runs than normal so you can keep tabs on your progress towards hitting your target pace after the 12 weeks. As always, those easy days can be replaced with some lower impact or strength work, alternatively recharge with some yoga or a full rest day.
| Week | Total km | Runs | Long run | Key session |
|---|---|---|---|---|
| 1 | 46 | 6 | — | Race |
| 2 | 57.3 | 6 | 15 km | Long run |
| 3 | 59.7 | 6 | 16 km | Long run |
| 4 | 48.5 | 6 | — | Race |
| 5 | 63 | 6 | 21 km | Long run |
| 6 | 53.6 | 6 | — | Race |
| 7 | 67.8 | 6 | 21 km | Long run |
| 8 | 64.1 | 6 | — | Race |
| 9 | 54.8 | 5 | 22 km | Long run |
| 10 | 62.5 | 5 | 24 km | Long run |
| 11 | 43.1 | 5 | — | Race |
| 12 | 45.1 | 5 | — | Race |
Easy 5km
Intervals
Easy 11km
Tempo
Rest
Tempo
Long Run 16km
Easy 5km
Pyramid Intervals
Easy 14km
Tempo
Rest
Tempo
Mixed-Paced Long Run
Rest
Intervals
Easy 13km
Progression
Rest
Easy 5km
Progression
Pace calculator
Km and mile splits for this target only