Half Marathon Race Calculator

Half Marathon Race Pace Calculator
Running performance tool

Half Marathon Race Pace Calculator

The half marathon is one of the most popular race distances in the world — and one of the most rewarding to pace correctly. Get your target kilometre pace and breakdown splits below.

Enter either your goal finish time or your goal pace per kilometre — the calculator works both ways, giving you your projected finish time, km/h speed and even splits throughout the race.

1
Choose: goal finish time or goal pace
2
Enter your target
3
Get your splits and projected time
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Half Marathon Pace Calculator
Half Marathon · finish time ↔ pace converter · even split projection
Goal finish time (h : mm : ss)
: :
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Pace per km
Required per kilometre.
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Finish time
Projected finish at this pace.
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Speed
Kilometres per hour.
SplitElapsed time
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Got your Half Marathon target. Now build the training to reach it.

Half marathon preparation spans 12–16 weeks and blends long run development, threshold work and race-specific practice. A well-structured plan around your target pace is what separates a strong run from a survival shuffle in the final 5km.

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No obligation — just a conversation about where you are and where you want to get to.

Running zones based on Daniels (2005) Daniels’ Running Formula.