Marathon & Half Pace Calculator
Enter your goal finish time and get the exact pace per mile and km to hold — plus your halfway split for even pacing. Free, private, instant.
Your numbers
Your race plan
- Required pace / mile
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- Pace / km
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- Halfway split
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Stop recalculating every time
Track it automatically with Marathon Training Dashboard
This calculator gives today's number. Marathon Training Dashboard runs the math live and logs it — one offline file, no subscription. One-time $24.
See Marathon Training Dashboard →Questions
- What pace do I need for my goal time?
- Divide goal time by race distance. This calculator does it for marathon, half, and 10K, and gives pace per mile and per km plus your halfway split for even pacing.
- Should I run even or negative splits?
- Even or slightly negative (second half faster) is the proven approach. Going out too fast and fading is the most common way to miss a goal — use the halfway split as your checkpoint.
- Is this free?
- Yes — free, in your browser, private. The full Marathon Training Dashboard builds your whole training block around this goal pace.
Related: guide · Marathon Training Dashboard · all tools on Etsy