Projected finish times
At your current pace, held steady over each distance. Bars scale with total time.
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Pace Calculator
Enter a distance and time to find your running pace and speed, then see projected finish times for common race distances.
Your pace
5:00 /km
Speed—
Pace per mile—
Pace per km—
How it works
Pace is simply the time it takes to cover one unit of distance. Divide your total time by the distance to get pace; divide distance by time to get speed. Projecting finish times assumes you hold the same pace, which is realistic for shorter efforts but optimistic for much longer ones.
Pace = total time ÷ distance
Speed = distance ÷ total time
Speed = distance ÷ total time
- Real marathon times are usually slower than a straight projection from a 10K, because fatigue accumulates.
- Use even or slightly negative splits (second half a touch faster) for your best race results.
Frequently asked questions
How do I convert pace between km and miles?
Multiply pace per km by 1.60934 to get pace per mile, or divide pace per mile by 1.60934 for pace per km.
Are the projected times guaranteed?
No. They assume a constant pace with no fatigue, so treat longer-distance projections as an optimistic ceiling rather than a promise.