42:00 10K pace
A 42:00 10K is 4:12/km (6:46/mi), 14.3 km/h.
| Change | Time | Pace |
|---|---|---|
| −1:00 | 41:00 | 4:066:36 |
| −0:45 | 41:15 | 4:086:38 |
| −0:30 | 41:30 | 4:096:41 |
| −0:15 | 41:45 | 4:116:43 |
| Your target /km | ||
| +0:15 | 42:15 | 4:146:48 |
| +0:30 | 42:30 | 4:156:50 |
| +0:45 | 42:45 | 4:176:53 |
| +1:00 | 43:00 | 4:186:55 |
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 4:12 per km
| Distance | Finish time |
|---|---|
| 1K | 4:12 |
| 1 mile | 6:46 |
| 5K | 21:00 |
| 10K | 42:00 |
| 10 miles | 1:07:36 |
| Half marathon | 1:28:37 |
| Marathon | 2:57:13 |
| 50K | 3:30:00 |
Splits for a 42:00 10K
| km | Split | Elapsed |
|---|---|---|
| 1 | 4:12 | 4:12 |
| 2 | 4:12 | 8:24 |
| 3 | 4:12 | 12:36 |
| 4 | 4:12 | 16:48 |
| 5 | 4:12 | 21:00 |
| 6 | 4:12 | 25:12 |
| 7 | 4:12 | 29:24 |
| 8 | 4:12 | 33:36 |
| 9 | 4:12 | 37:48 |
| 10 | 4:12 | 42:00 |
| Mile | Split | Elapsed |
|---|---|---|
| 1 | 6:46 | 6:46 |
| 2 | 6:46 | 13:31 |
| 3 | 6:46 | 20:17 |
| 4 | 6:46 | 27:02 |
| 5 | 6:46 | 33:48 |
| 6 | 6:46 | 40:33 |
| Final 0.214 mi | 1:27 | 42:00 |
What a 42:00 10K predicts
Estimate| Distance | Estimated time |
|---|---|
| 5K | 20:09 |
| 10 miles | 1:09:33 |
| Half marathon | 1:32:40 |
| Marathon | 3:13:13 |
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 40 to 45 minutes, kilometres 6 to 8 are the hard part
Run the first half on goal pace. Between 6 and 8 km the effort climbs, and that’s where the pace must not drop.
A weekly session of 1 to 2 km repeats at goal pace teaches you the rhythm. Add one longer easy run each week.
No fuel needed during the race. Take a drink at the station if it’s warm.
Pace questions runners ask
- What pace do I need for a 42:00 10K?
- A 42:00 10K is 4:12/km (6:46/mi), 14.3 km/h, held for the whole race.
- What treadmill speed is 42:00 10K pace?
- Set the treadmill to 14.3 km/h or 8.9 mph to run 4:12/km (6:46/mi).
- Where should I be at halfway in a 42:00 10K?
- With even pacing you pass halfway in 21:00; with a negative split, a little later.
- What does a 42:00 10K predict for other distances?
- The Riegel formula estimates 20:09 for the 5K, 1:09:33 for the 10-mile race, 1:32:40 for the half marathon, 3:13:13 for the marathon, assuming you’ve trained for each distance.