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Health, Fitness & Sports

Half Marathon Pace Calculator.

Training inputs and results stay in this browser. Calculate target pace and splits for a half-marathon time. Uses local formulas and independent verification.

Use Half Marathon Pace Calculator

Private in this browser. Sports inputs and results stay in this browser.

Tool options
Preparing the local tool…

How it works

  1. 01

    Enter time, distance or equipment values in the labeled fields.

  2. 02

    Run the bounded local estimate.

  3. 03

    Review units, assumptions and rounding.

Frequently asked questions

Does this predict actual performance?

No. It applies ideal arithmetic to entered values and cannot predict terrain, fatigue or individual performance.

Does Half Marathon Pace Calculator upload my data?

Half Marathon Pace Calculator runs locally in your browser. Sports inputs and results stay in this browser.

What output does Half Marathon Pace Calculator create?

Half Marathon Pace Calculator creates Json output after the result passes its local verification checks.

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