Marathon Pace Calculator
Enter your goal finish time — get your per-mile pace, per-km pace, and a full race split table.
| Distance | Split | Elapsed |
|---|---|---|
| 5K | 0:28:26 | 0:28:26 |
| 10K | 0:28:26 | 0:56:53 |
| 15K | 0:28:26 | 1:25:19 |
| 20K | 0:28:26 | 1:53:45 |
| Half Marathon | 0:06:15 | 2:00:00 |
| 25K | 0:22:12 | 2:22:12 |
| 30K | 0:28:26 | 2:50:38 |
| 35K | 0:28:26 | 3:19:05 |
| 40K | 0:28:26 | 3:47:31 |
| Marathon | 0:12:29 | 4:00:00 |
Ready to train for this goal?
Pacerly builds a structured training plan around your goal time — with target paces for every run and a race-day execution strategy. Free to start.
Build a full training plan for this goal →Supports 5K, 10K, half marathon, and marathon distances.
Common marathon goal times and paces
Click any row to populate the calculator above.
What pace do you need for a 4-hour marathon?
To finish in 4:00:00, run 9:09 per mile (5:41 per km).
What pace do you need for a sub-3-hour marathon?
To finish in 3:00:00, run 6:52 per mile (4:16 per km).
| Goal Time | Per Mile | Per KM |
|---|---|---|
| 3:00 | 6:52 | 4:16 |
| 3:30 | 8:01 | 4:59 |
| 4:00 | 9:09 | 5:41 |
| 4:30 | 10:18 | 6:24 |
| 5:00 | 11:27 | 7:06 |
| 5:30 | 12:35 | 7:49 |
What is marathon pace?
Your marathon pace is the average speed you need to maintain across all 26.2 miles to hit your goal finish time. Even small variations — going out too fast in the first miles, or slowing in the final 10K — compound into significant time losses. Knowing your exact pace before race day removes the guesswork.
How to use this calculator
Enter your goal finish time above. The calculator shows your required pace per mile and per kilometer, plus a full split table for key race distances. Use it to plan your race execution, brief your support crew, or set your GPS watch before the starting line.
What comes after the calculator?
Knowing your pace is step one. Pacerly takes it further — building a structured training plan around your goal time and generating a mile-by-mile race strategy so you know exactly how to run your race, not just how fast.
See an example race strategy →See how Pacerly builds your plan →