How pace calculator works
Running pace is how long it takes to cover a fixed distance, usually expressed as minutes and seconds per kilometer or per mile. This calculator takes a distance and a finish time and returns your pace.
It converts the distance to both kilometers and miles (1 mile = 1.609344 km), then divides the total time in seconds by each distance to get seconds per kilometer and per mile, formatting the result as MM:SS. It also derives speed in km/h and mph from distance ÷ time.
Use it to plan a race target, check whether you are on pace for a personal best, or compare treadmill speeds to outdoor paces. Enter any race distance — 5K, 10K, half marathon, or marathon — and your finish time to see your pace.