Set the checkpoint

Distance means measured distance, not a lap number. Custom units are m, km or miles. An equal or longer checkpoint remains available as a pace-equivalent calculation.

Seconds, M:SS or H:MM:SS. Example: 3:30. Blank or malformed clocks clear the projection.

At this average speed

Illustrative example: 3:30 at 1K of 5K.

17:30

for 5K, holding the checkpoint’s average speed.

Per kilometer
3:30
Per mile
5:38

20.0% of the target distance covered. This assumes the same average speed to the finish.

Read the calculation

Finish = 210 seconds × (5000m ÷ 1000m). Calculations retain the entered precision; displayed clocks round to the nearest whole second. A positive result rounding below one second is labeled explicitly; extremely large values use approximate scientific seconds.

This is a linear pace projection. It does not adjust for fatigue, wind, hills, surface, tactics or a change in effort. A checkpoint’s average speed need not describe the rest of the race.

One mile is approximated as 1609.34m for these calculations. Completion refers to distance, not effort.