Running Pace Calculator
Solve for pace, time or distance — given the other two. For runners, walkers, cyclists.
About this calculator
Three numbers describe any run: distance, time and pace. Know any two and the third is fixed. This calculator solves for whichever one you don't have — useful for race planning, training, or just checking what pace you ran in this morning's loop.
How it works
Pace and speed are inverses. Pace is time per distance (minutes per km, minutes per mile). Speed is distance per time (km/h, mph). A 5 min/km pace is the same as 12 km/h. They describe the same thing but pace is more useful for runners because it's the number on your watch.
Pick the 'Find' mode based on what you don't know. 'Pace' is the most common — you ran a known distance in a known time, and want to know your pace. 'Time' is for planning races — at your target pace, how long will the race take? 'Distance' is for planning workouts — at this pace for this time, how far do I go?
Units matter. Track and race distances are usually in km outside the US; in the US, marathons are still measured in miles. Make sure your pace unit matches your distance unit — converting min/km to min/mile is multiply by 1.609.
For comparing efforts across different terrain, use Grade-Adjusted Pace (GAP). A 5:00/km on flat is harder than 5:00/km downhill. This calculator gives you raw pace; for GAP, use a GPS watch or app that knows the elevation profile.
Formula
pace = time / distance (e.g. minutes per km)
speed = distance / time × 60 (e.g. km/h)
time = distance × pace (in minutes)
distance = time / pace (in km or mi)Examples
Ran 10 km in 50 minutes — what was my pace?
10 km in 50 minutes is exactly 5 minutes per km, equivalent to 12 km/h. A solid recreational running pace.
Result: 5:00 min/km — 12 km/h
Marathon goal: 4:00:00, what pace per mile?
26.2 miles in 240 minutes works out to a 9:09 per mile pace (5:42 per km equivalent). The 'magic' Boston Marathon qualifier pace for many age groups.
Result: 9:09 min/mile — 6.55 mph