Marathon Pace Calculator
Enter a goal marathon finish time to get the pace you need to hold, your halfway target, and cumulative splits.
How to use the marathon pace calculator
- Enter your goal marathon finish time (h:mm:ss).
- Click Calculate pace.
- Use the per-km/mile pace and the split table to pace your race.
Even pacing wins marathons
Going out faster than goal pace in the first half is the most common marathon mistake. The split table gives you checkpoints so you can hold steady and avoid the late-race fade.
Frequently asked questions
What pace is a sub-4 hour marathon?
A 4:00:00 marathon requires about 5:41 per km (9:09 per mile) held for the full 42.195 km.
What pace is a sub-3 hour marathon?
A 3:00:00 marathon requires roughly 4:16 per km (6:52 per mile) — a demanding pace that needs significant training.
Related tools
Half Marathon Pace Calculator
Enter a goal half marathon finish time to get your required pace, halfway split, and cumulative split targets.
Pace Calculator
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Plan your carbohydrate, fluid and sodium intake for a long race based on your expected duration.