[ TOOL.01 ] Free running tool

Running Pace Calculator

Enter a distance and a finish time. Get your pace per km and per mile, plus predicted finish times for other race distances.

Distance

Finish time

HRS

MIN

SEC

Pace / km

5:00/km

Pace / mile

8:03/mi

Speed

12.0km/h

Predicted race times

5K23:59

10K50:00

Half Marathon1:50:19

Marathon3:50:01

Riegel formula (exponent 1.06) - assumes equivalent training for the target distance.

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Add this free pace calculator to your site or blog. Copy the snippet - it keeps a small credit link to Pace Builder.

<iframe src="https://www.pacebuilder.run/embed/pace-calculator" title="Running Pace Calculator by Pace Builder" width="100%" height="600" loading="lazy" style="border:1px solid #1e231e;border-radius:10px;max-width:440px"></iframe>
<p style="font:13px/1.5 system-ui,sans-serif;color:#6b7280">Free <a href="https://www.pacebuilder.run/en/tools/pace-calculator" target="_blank" rel="noopener">running pace calculator</a> by <a href="https://www.pacebuilder.run" target="_blank" rel="noopener">Pace Builder</a></p>

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