Half Marathon Pace Calculator
Enter your goal half marathon time and we'll show the pace you need per kilometre and per mile, with key splits.
Goal Half Marathon time:
Pace / km5:41 /km
Pace / mile9:09 /mi
Halfway split1:00:00
Per-km split5:41
How this works
21.1 km is long enough to punish overpacing. Aim to be slightly under your target pace for the first 10 km.
Want a plan built around these numbers?
Runallo turns your paces and goals into a weekly adaptive plan.
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