Sub-20 5K pace chart
To run a 5K in under 20 minutes you need to average faster than 4:00 per km or 6:26 per mile. Here are the checkpoint times to hit, at exact goal pace and with a small buffer.
To finish under 20:00 you need to be a little faster than the exact pace. The buffer column targets 19:45 (3:57/km, 6:21/mile), which leaves room for GPS drift, a crowded start and the extra distance you run on corners.
| Checkpoint | Elapsed at 20:00 | Elapsed at 19:45 (buffer) |
|---|---|---|
| 1 km | 4:00 | 3:57 |
| Mile 1 | 6:26 | 6:21 |
| 2 km | 8:00 | 7:54 |
| 3 km | 12:00 | 11:51 |
| Mile 2 | 12:52 | 12:43 |
| 4 km | 16:00 | 15:48 |
| Mile 3 | 19:19 | 19:04 |
| Finish (5K) | 20:00 | 19:45 |
What sub-20 fitness looks like in training
Using our training pace calculator, a runner capable of 19:45 would typically train at about:
| Zone | Per km | Per mile |
|---|---|---|
| Easy | 5:04–5:35 | 8:10–9:00 |
| Tempo (threshold) | 4:13–4:18 | 6:47–6:55 |
| Interval | 3:53 | 6:15 |
| Repetition | 3:38 | 5:50 |
If your interval and tempo sessions at these paces feel controlled, you're likely close. If they feel like races, build for a few more weeks first. Read the full guide: how to break 20 minutes in the 5K.
FAQ
What pace is a sub-20 5K?
Faster than 4:00 per km or 6:26 per mile. Aim for about 3:57 per km to leave a margin.
What is a sub-20 5K on a treadmill?
About 9.3 mph (15.0 km/h) is exactly 20:00; set 9.4 mph for a small buffer. Many runners add a 1% incline.
What 400 m lap time do I need for sub-20?
1:36 per lap is exactly 20:00; 1:35 per lap gives a 19:45. A 5K is 12.5 laps of a standard 400 m track.