4:00:00 marathon: what it equals and how to train for it
Running a marathon in 4:00:00 means holding 5:41 per kilometre (9:09 per mile). Here is what that fitness is worth at other distances, and the paces to train at.
Equal race times
Predictions from an equal-effort model: the time you could run at each distance with the same fitness and the right training. Longer distances need specific endurance work.
| Distance | Time | Pace per km | Pace per mile |
|---|---|---|---|
| 5K | 25:14 | 5:03 | 8:07 |
| 10K | 52:22 | 5:14 | 8:26 |
| 15K | 1:20:40 | 5:23 | 8:39 |
| 10 miles | 1:26:58 | 5:24 | 8:42 |
| Half marathon | 1:56:06 | 5:30 | 8:51 |
| Marathon | 4:00:00 | 5:41 | 9:09 |
Training paces for this fitness
| Run | Per km | Per mile | What it is for |
|---|---|---|---|
| Easy | 6:06 to 7:01 | 9:49 to 11:17 | Most of your running: conversational, builds the base. |
| Marathon | 5:41 | 9:09 | Steady, controlled race-effort running. |
| Threshold | 5:19 | 8:33 | Comfortably hard: tempo runs and cruise intervals. |
| Interval | 4:54 | 7:53 | Hard repeats of 3 to 5 minutes with jog recoveries. |
| Repetition | 4:37 | 7:25 | Short, fast repeats with full recovery, for speed and form. |
How to use these numbers
- Run most of your weekly distance at the easy pace. If you can only speak in short sentences, slow down.
- Keep threshold and interval work to a small share of the week, and add it gradually.
- Hot, hilly or windy? Judge hard sessions by effort, not pace.
- Re-check your numbers after a new race or a hard time trial: fitness changes, and so should your paces.
Turn this into a plan
Runergy Lab builds a week-by-week plan from your own race time, with these paces, the long runs and the easy weeks, and re-plans when life gets in the way. See the marathon plan or build your own.
Questions
Is a 4:00:00 marathon a good time?
It depends on your age, experience and goals. A 4:00:00 marathon is an average pace of 5:41 per kilometre (9:09 per mile), which is equal in effort to 5K in 25:14. Use it as a starting point for training, not a verdict.
What should my easy pace be if I run a 4:00:00 marathon?
About 6:06 to 7:01 per kilometre (9:49 to 11:17 per mile). Easy runs should feel conversational; threshold work sits near 5:19 per kilometre.
Faster: 3:50:00 marathon · Slower: 4:10:00 marathon · All race times
These are estimates, not guarantees of a future result. Pace figures round to the second.