4:20 marathon pace
A 4:20 marathon is 6:10/km (9:55/mi), 9.7 km/h.
| Change | Time | Pace |
|---|---|---|
| −4:00 | 4:16:00 | 6:049:46 |
| −3:00 | 4:17:00 | 6:059:48 |
| −2:00 | 4:18:00 | 6:079:50 |
| −1:00 | 4:19:00 | 6:089:53 |
| Your target /km | ||
| +1:00 | 4:21:00 | 6:119:57 |
| +2:00 | 4:22:00 | 6:1310:00 |
| +3:00 | 4:23:00 | 6:1410:02 |
| +4:00 | 4:24:00 | 6:1510:04 |
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 6:10 per km
| Distance | Finish time |
|---|---|
| 1K | 6:10 |
| 1 mile | 9:55 |
| 5K | 30:49 |
| 10K | 1:01:37 |
| 10 miles | 1:39:10 |
| Half marathon | 2:10:00 |
| Marathon | 4:20:00 |
| 50K | 5:08:06 |
Splits for a 4:20 marathon
| km | Split | Elapsed |
|---|---|---|
| 1 | 6:10 | 6:10 |
| 2 | 6:10 | 12:19 |
| 3 | 6:10 | 18:29 |
| 4 | 6:10 | 24:39 |
| 5 | 6:10 | 30:49 |
| 6 | 6:10 | 36:58 |
| 7 | 6:10 | 43:08 |
| 8 | 6:10 | 49:18 |
| 9 | 6:10 | 55:27 |
| 10 | 6:10 | 1:01:37 |
| 11 | 6:10 | 1:07:47 |
| 12 | 6:10 | 1:13:57 |
| 13 | 6:10 | 1:20:06 |
| 14 | 6:10 | 1:26:16 |
| 15 | 6:10 | 1:32:26 |
| 16 | 6:10 | 1:38:35 |
| 17 | 6:10 | 1:44:45 |
| 18 | 6:10 | 1:50:55 |
| 19 | 6:10 | 1:57:05 |
| 20 | 6:10 | 2:03:14 |
| 21 | 6:10 | 2:09:24 |
| 22 | 6:10 | 2:15:34 |
| 23 | 6:10 | 2:21:43 |
| 24 | 6:10 | 2:27:53 |
| 25 | 6:10 | 2:34:03 |
| 26 | 6:10 | 2:40:13 |
| 27 | 6:10 | 2:46:22 |
| 28 | 6:10 | 2:52:32 |
| 29 | 6:10 | 2:58:42 |
| 30 | 6:10 | 3:04:51 |
| 31 | 6:10 | 3:11:01 |
| 32 | 6:10 | 3:17:11 |
| 33 | 6:10 | 3:23:20 |
| 34 | 6:10 | 3:29:30 |
| 35 | 6:10 | 3:35:40 |
| 36 | 6:10 | 3:41:50 |
| 37 | 6:10 | 3:47:59 |
| 38 | 6:10 | 3:54:09 |
| 39 | 6:10 | 4:00:19 |
| 40 | 6:10 | 4:06:28 |
| 41 | 6:10 | 4:12:38 |
| 42 | 6:10 | 4:18:48 |
| Final 0.195 km | 1:12 | 4:20:00 |
| Mile | Split | Elapsed |
|---|---|---|
| 1 | 9:55 | 9:55 |
| 2 | 9:55 | 19:50 |
| 3 | 9:55 | 29:45 |
| 4 | 9:55 | 39:40 |
| 5 | 9:55 | 49:35 |
| 6 | 9:55 | 59:30 |
| 7 | 9:55 | 1:09:25 |
| 8 | 9:55 | 1:19:20 |
| 9 | 9:55 | 1:29:15 |
| 10 | 9:55 | 1:39:10 |
| 11 | 9:55 | 1:49:05 |
| 12 | 9:55 | 1:59:00 |
| 13 | 9:55 | 2:08:55 |
| 14 | 9:55 | 2:18:50 |
| 15 | 9:55 | 2:28:45 |
| 16 | 9:55 | 2:38:40 |
| 17 | 9:55 | 2:48:35 |
| 18 | 9:55 | 2:58:30 |
| 19 | 9:55 | 3:08:25 |
| 20 | 9:55 | 3:18:20 |
| 21 | 9:55 | 3:28:15 |
| 22 | 9:55 | 3:38:10 |
| 23 | 9:55 | 3:48:05 |
| 24 | 9:55 | 3:58:00 |
| 25 | 9:55 | 4:07:55 |
| 26 | 9:55 | 4:17:50 |
| Final 0.219 mi | 2:10 | 4:20:00 |
What a 4:20 marathon predicts
Estimate| Distance | Estimated time |
|---|---|
| 5K | 27:07 |
| 10K | 56:31 |
| 10 miles | 1:33:36 |
| Half marathon | 2:04:42 |
These are estimates from the Riegel formula, T2 = T1 × (D2 ÷ D1)^1.06. They assume you’ve trained for the other distance, so treat them as a guide, not a promise.
From 4:00 to 4:30, time on your feet is the training
You’ll be running for more than four hours, so plan long runs by time as well as distance. Getting used to being on your feet that long matters as much as the pace.
Eat and drink on a schedule from early on, and carry what you’ve trained with rather than relying on what’s handed out. It may be warmer by the second half than at the start, so dress for the whole race.
Run/walk is a sound way to hit this time. Short walk breaks taken regularly from the start often finish faster than running until you have to walk.
Pace questions runners ask
- What pace do I need for a 4:20 marathon?
- A 4:20 marathon is 6:10/km (9:55/mi), 9.7 km/h, held for the whole race.
- What treadmill speed is 4:20 marathon pace?
- Set the treadmill to 9.7 km/h or 6.1 mph to run 6:10/km (9:55/mi).
- Where should I be at halfway in a 4:20 marathon?
- With even pacing you pass halfway in 2:10:00; with a negative split, a little later.
- What does a 4:20 marathon predict for other distances?
- The Riegel formula estimates 27:07 for the 5K, 56:31 for the 10K, 1:33:36 for the 10-mile race, 2:04:42 for the half marathon, assuming you’ve trained for each distance.