Pace Calculator
Calculate running pace per mile and per kilometer, speed, and predicted 5K, 10K, half marathon and marathon times.
How pace is calculated
Pace = time ÷ distance, shown as minutes per mile or per kilometer. Speed = distance ÷ time. Example: 5 miles in 40:00 is a pace of 8:00 per mile (4:58 per km), or 7.5 mph. Predicted race times assume you hold the same pace for the whole distance.
Frequently asked questions
How do I calculate running pace?
Divide your total time by your distance. 40 minutes for 5 miles is 8 minutes per mile.
How do I convert pace per mile to per kilometer?
Divide the minutes per mile by 1.609. An 8:00 mile is about 4:58 per kilometer.
Are the race predictions accurate?
They assume a constant pace. In reality pace slows over longer distances, so longer-race times are optimistic.
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