38:00 10K pace
A 38:00 10K is 3:48/km (6:07/mi), 15.8 km/h.
| Change | Time | Pace |
|---|---|---|
| −1:00 | 37:00 | 3:425:57 |
| −0:45 | 37:15 | 3:446:00 |
| −0:30 | 37:30 | 3:456:02 |
| −0:15 | 37:45 | 3:476:05 |
| Your target /km | ||
| +0:15 | 38:15 | 3:506:09 |
| +0:30 | 38:30 | 3:516:12 |
| +0:45 | 38:45 | 3:536:14 |
| +1:00 | 39:00 | 3:546:17 |
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 3:48 per km
| Distance | Finish time |
|---|---|
| 1K | 3:48 |
| 1 mile | 6:07 |
| 5K | 19:00 |
| 10K | 38:00 |
| 10 miles | 1:01:09 |
| Half marathon | 1:20:10 |
| Marathon | 2:40:20 |
| 50K | 3:10:00 |
Splits for a 38:00 10K
| km | Split | Elapsed |
|---|---|---|
| 1 | 3:48 | 3:48 |
| 2 | 3:48 | 7:36 |
| 3 | 3:48 | 11:24 |
| 4 | 3:48 | 15:12 |
| 5 | 3:48 | 19:00 |
| 6 | 3:48 | 22:48 |
| 7 | 3:48 | 26:36 |
| 8 | 3:48 | 30:24 |
| 9 | 3:48 | 34:12 |
| 10 | 3:48 | 38:00 |
| Mile | Split | Elapsed |
|---|---|---|
| 1 | 6:07 | 6:07 |
| 2 | 6:07 | 12:14 |
| 3 | 6:07 | 18:21 |
| 4 | 6:07 | 24:28 |
| 5 | 6:07 | 30:35 |
| 6 | 6:07 | 36:42 |
| Final 0.214 mi | 1:18 | 38:00 |
What a 38:00 10K predicts
Estimate| Distance | Estimated time |
|---|---|
| 5K | 18:14 |
| 10 miles | 1:02:56 |
| Half marathon | 1:23:51 |
| Marathon | 2:54:48 |
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.
Sub-40 rewards a patient first 3 km
Sub-40 is a classic club goal. The common mistake is a fast start on fresh legs, which makes the first kilometre the quickest and the last three the slowest.
Kilometre repeats around goal pace, a weekly tempo run and a long run will get you there.
Use the ladder: the gap between 39 and 41 minutes is only a few seconds per km.
Pace questions runners ask
- What pace do I need for a 38:00 10K?
- A 38:00 10K is 3:48/km (6:07/mi), 15.8 km/h, held for the whole race.
- What treadmill speed is 38:00 10K pace?
- Set the treadmill to 15.8 km/h or 9.8 mph to run 3:48/km (6:07/mi).
- Where should I be at halfway in a 38:00 10K?
- With even pacing you pass halfway in 19:00; with a negative split, a little later.
- What does a 38:00 10K predict for other distances?
- The Riegel formula estimates 18:14 for the 5K, 1:02:56 for the 10-mile race, 1:23:51 for the half marathon, 2:54:48 for the marathon, assuming you’ve trained for each distance.