The pace you need
A 6-hour marathon is 13:43 per mile or 8:31 per kilometer, the pace of a 3:00:00 half marathon held for twice the distance. It can be done with run-walk intervals: running 4 minutes at about 13:15 per mile (8:14 per km) and walking 1 minute at 16:06 per mile averages goal pace. Walking alone will not do it: at that walking pace the marathon takes 7:01:57.
| Value | |
|---|---|
| Pace per km to hold | 8:31 (finishes in 5:59:22) |
| Pace per mile to hold | 13:43 (finishes in 5:59:38) |
| Exact average pace | 8:31.9 /km · 13:43.8 /mi |
| Speed | 7.0 km/h · 4.4 mph |
| Halfway at even pace | 3:00:00 |
The paces above are rounded down to the second, so holding them gets you home on the goal or just inside it.
Checkpoint times
What your watch should read at each marker for an even-paced race, and for a plan where the second half is 2% faster than the first. A 2% negative split means going through halfway in 3:01:49 and running the second half in 2:58:11.
| Checkpoint | Even pace | 2% negative split |
|---|---|---|
| 5 km | 42:40 | 43:25 |
| 10 km | 1:25:19 | 1:26:38 |
| 15 km | 2:07:59 | 2:09:39 |
| 10 miles | 2:17:18 | 2:19:01 |
| 20 km | 2:50:38 | 2:52:27 |
| Halfway | 3:00:00 | 3:01:49 |
| 25 km | 3:33:18 | 3:35:03 |
| 30 km | 4:15:57 | 4:17:27 |
| 20 miles | 4:34:37 | 4:35:56 |
| 35 km | 4:58:37 | 4:59:39 |
| 40 km | 5:41:16 | 5:41:38 |
| Finish | 6:00:00 | 6:00:00 |
How to pace a 6-hour marathon
- Use the run-walk pattern from your long runs, and start it in the first mile.
- Check the elapsed time at every fifth mile marker, because the pace on a watch jumps with each walk break: 1:08:39, 2:17:18, 3:25:58, 4:34:37, 5:43:16.
- Halfway should come at 3:00:00. From 20 miles the last 6.2 miles take 1:25:23 at goal pace.
Want the numbers on your wrist? The pace band generator prints a strip with the elapsed time at every kilometer or mile.
Training paces for this goal
A 6-hour marathon scores a VDOT of about 22.7 on the scale from Jack Daniels’ Running Formula. These are the training paces that go with that score, using Daniels’ intensities: easy running at 59 to 74% of VO2 max, threshold at 88% and intervals at 97.5%.
| Session | Per km | Per mile | Used for |
|---|---|---|---|
| Easy | 9:04 to 10:41 | 14:35 to 17:11 | Most of your weekly running, including long runs |
| Marathon | 8:32 | 13:44 | Steady segments of long runs |
| Threshold | 7:57 | 12:48 | Tempo runs of about 20 minutes, or cruise intervals |
| Interval | 7:21 | 11:50 | Repeats of 3 to 5 minutes with jog recovery |
Train at the paces for the fitness you have now, not the goal. If your recent races are slower, use the VO2 max calculator with a recent result and move to these paces as your races improve.
We have no training plan for this exact goal: the closest is the 16-week 5-hour marathon training plan, built for a finish 1 hour faster, so its paces are harder than the ones above.
Race times that match this goal
The same VDOT gives these times at other distances. If you have run close to them recently, the goal is within reach on equal training. For the marathon, treat these as the minimum: many runners find the marathon slower than their shorter races predict, especially without long runs of 30 km or more in training.
| Race | Equivalent time | Pace per km |
|---|---|---|
| 5K | 38:34 | 7:43 |
| 10K | 1:20:22 | 8:02 |
| Half marathon | 2:57:03 | 8:24 |
Questions
What pace is a 6-hour marathon?
8:31 per kilometer or 13:43 per mile. Holding exactly 8:31 per km gets you to the finish in 5:59:22, and 13:43 per mile gets you there in 5:59:38.
What is the halfway split for a 6-hour marathon?
3:00:00 at even pace. With a 2% negative split, go through halfway in 3:01:49 and run the second half in 2:58:11.
What treadmill speed is 6-hour marathon pace?
7.0 km/h or 4.4 mph. A 1% incline is often suggested to make up for the lack of air resistance, but the study behind it tested speeds from 10.5 to 18 km/h (6.5 to 11.2 mph). At this slower pace air resistance matters less, so a level treadmill is fine.
What 5K time do I need for a 6-hour marathon?
About 38:34 on equal fitness, using Daniels’ VDOT tables. A half marathon of 2:57:03 is the better guide for the marathon.
How do I train for a 6-hour marathon?
Build most of your week from easy running at 9:04 to 10:41 per km, with one threshold session near 7:57 per km and a weekly long run. Run the goal pace itself in shorter sections so it feels familiar on race day.
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Sources
- Daniels J. Daniels’ Running Formula. 4th ed. Human Kinetics; 2022. VDOT tables and training intensities.
- Daniels J, Gilbert J. Oxygen Power: Performance Tables for Distance Runners. 1979.
- Jones AM, Doust JH. A 1% treadmill grade most accurately reflects the energetic cost of outdoor running. Journal of Sports Sciences. 1996;14(4):321-327.