Pace Calculator — Running

Whether you're training for a 5K or chasing a marathon PR, this Pace Calculator helps you plan every mile. Enter any two of three values — distance, time, or pace — and the calculator solves for the third. It supports miles and kilometers, and includes presets for common race distances like 5K, 10K, half marathon, and marathon.

Use it to set target splits for race day, figure out the pace needed to hit a specific finish time, or convert between minutes-per-mile and minutes-per-kilometer. The results update instantly as you change inputs.