Running Pace Calculator
Calculate pace, time or distance for any run, including common race distances.
What is the Running Pace Calculator?
This tool converts between pace, finish time and distance for a run — enter any two and it solves for the third, with presets for the common race distances.
The math
Pace = Time ÷ Distance, Time = Pace × Distance, Distance = Time ÷ Pace. All times are handled in hours:minutes:seconds, and pace in minutes:seconds per kilometer or mile.
How to use it
- Choose what you want to solve for: pace, finish time, or distance.
- Pick a race distance preset or enter a custom one, and your unit (km or miles).
- Enter the other known value (your goal pace or your target finish time).
Use this to reverse-engineer a training pace from a goal race time (e.g. "what pace do I need to run a sub-2-hour half marathon?"), or to predict a finish time from a pace you've been training at.
Want the "why" behind this tool? Read Why Pace, Time and Distance Are Really Just One Equation.