Running Pace Calculator
Compute running pace and speed from distance and time in km or miles. Check splits for a 5K tune-up — free, local, no signup.
How to Use the Running Pace Calculator
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Frequently Asked Questions
How is pace computed?
Total minutes divided by distance: 5 km in 25 minutes is exactly 5:00/km at 12.00 km/h. Enter hours, minutes, and seconds separately for precise splits.
Pace per km or mile?
Both — toggle the unit and the same time converts: 5:00/km equals about 8:03/mi. Even pacing beats fast starts — first-km discipline decides finish times.
Ready-made examples?
Presets cover 5K in 25 min, 10K in 50 min, and marathon 42.2 km in 3:30 (4:59/km). Start from one and adjust the time to your own target.
Is run data uploaded?
No — math runs locally in your browser. Nothing leaves your device.
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Last updated October 2026