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Running and endurance

Half Marathon Pace Calculator

Enter your target time for the 13.1 miles and get the pace to hold with every mile split.

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Results
Fill in the form: the result appears instantly.

Prepare your goal with a running coach

Training paces are only useful inside a plan. A running coach builds the weeks, the long runs and the taper for your race.

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Continue with

Marathon Pace CalculatorThe pace and splits for your marathon goal. Race Time PredictorPredict your times at other distances from one race. Heart Rate Zone CalculatorYour five training zones from max and resting heart rate.

Example

A 2:00:00 half marathon needs 9:09 per mile (5:41 per km): 45:47 at mile 5, 1:31:33 at mile 10.

Method and formula

Pace = goal time / 21.0975 km (13.109 miles). Equivalent times use Riegel.

Limits

  • Plan 10 to 15 seconds per mile slower in the first two miles; the calculator shows even splits.

FAQ

What is a good half marathon time?

Under 2:00 is the classic recreational goal; under 1:45 is good, under 1:30 is competitive.

How long should I train for a half?

10 to 14 weeks for a runner already covering 15 to 20 miles a week.

Free educational tool. Results are estimates from published formulas.