1:20 Half Marathon Pace
To finish a 1:20 half marathon in 1:20:00, you need to average 3:47 per kilometer — that's 6:06 per mile, or 15.8 km/h (9.8 mph) held for the full 21.0975 km.
This is a fast, competitive club-runner time that requires consistent structured training.
Split times for a 1:20 half marathon
Where you need to be at each checkpoint, assuming perfectly even pacing — the strategy that works best for most runners at this distance.
| Checkpoint | Elapsed time |
|---|---|
| 3 km | 11:23 |
| 5 km | 18:58 |
| 8 km | 30:20 |
| 10 km | 37:55 |
| Halfway | 40:00 |
| 13 km | 49:18 |
| 15 km | 56:53 |
| 18 km | 1:08:15 |
| 20 km | 1:15:50 |
| Finish | 1:20:00 |
Want kilometer-by-kilometer splits, negative splits, or mile splits? Build a custom plan with the Split Time Generator.
Is 1:20:00 realistic for you?
Race times scale predictably across distances (we use the Riegel formula). If your recent results are close to these equivalents, a 1:20 half marathon is within reach:
| Distance | Equivalent time | Pace |
|---|---|---|
| Marathon | 2:46:48 | 3:57 /km |
| 10K | 36:15 | 3:37 /km |
| 5K | 17:23 | 3:28 /km |
These assume similar training for each distance — check your own numbers with the Pace Calculator.
Training paces for this goal
Rules of thumb derived from your goal — most of your training should be much slower than race pace:
Make it stick on race day
🖨 Print the free pace band for this exact goal →
Practice your rhythm with the Cadence Trainer, and read our guide on pacing strategies from 5K to marathon.