How to use this calculator
Enter a positive distance, choose kilometres or miles, and enter the elapsed hours, minutes and seconds. Compare pace per kilometre, pace per mile, speed and split times.
How to use the result
Pace is elapsed time divided by distance; speed is distance divided by time. Splits use the selected distance unit and include a partial last split when the distance is not a whole number.
Race-time comparisons use T2 = T1 × (D2/D1)^1.06. The displayed training paces are fixed multipliers of the entered race pace, rather than a personalized training prescription.
Assumptions and limits
Use minutes and seconds from 0–59, positive time and distance, and a distance no greater than 10,000 selected units. Race predictions do not account for weather, terrain, fatigue, fitness changes or differences in preparation.
Worked example
A 5 km run completed in 25 minutes has a pace of 5:00 per kilometre and an average speed of 12 km/h.