Half Marathon Pace Calculator
Enter a goal half marathon finish time to get your required pace, halfway split, and cumulative split targets.
How to use the half marathon pace calculator
- Enter your goal half marathon finish time (h:mm:ss).
- Click Calculate pace.
- Use the pace and splits to plan an even effort over 21.1 km.
Pacing the half marathon
The half is long enough that early overpacing costs you in the final 5 km. Aim to reach halfway on or just behind target, then hold or gently push to the finish.
Frequently asked questions
What pace is a sub-2 hour half marathon?
A 2:00:00 half marathon needs about 5:41 per km (9:09 per mile) over the 21.0975 km distance.
What pace is a 1:45 half marathon?
A 1:45:00 half marathon requires roughly 4:59 per km (8:01 per mile).
Related tools
Marathon Pace Calculator
Enter a goal marathon finish time to get the pace you need to hold, your halfway target, and cumulative splits.
Pace Calculator
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Negative Split Calculator
Plan a negative split by choosing how much faster to run the second half of your race.