Pace Board

What this result means

A pace board answers one question: if this pace never changed, what would the clock say at each distance? Time is pace multiplied by kilometres. Speed is the inverse of pace. There is no Riegel, no VDOT, and no fatigue model.

Use it when you think in min/km or min/mile and want the 5K, 10K, half, marathon, and ultra clocks on one screen. Dedicated 5K, 10K, half, and marathon pages still exist for splits. The general pace calculator still solves any two of time, distance, and pace. Race prediction lives in the races category.

6:00 per kilometre is 10.0 km/h and about 9:39 per mile. The 5K is 30:00. The 10K is 1:00:00. The half is about 2:06:35. The marathon is about 4:13:10. A 50K is 5:00:00. A 100K is 10:00:00. A 100 mile even-pace clock is about 16:05:36.

5:00/km is 12.0 km/h and about 8:03/mile. The 5K becomes 25:00, the 10K 50:00. Switch the header to miles and type 8:00/mile; the board converts with 1.609344 km per mile, not a rounded 1.6.

Calculation method

Finish time in seconds = seconds per kilometre × distance in kilometres. Mile pace is kilometre pace × 1.609344. km/h = 3600 ÷ seconds per kilometre. Displayed times round to the nearest second. Speed rounds to one decimal place.

This is the same identity as the running pace calculator, applied to a fixed list of distances: mile, 5K, 10K, 15K, 10 mile, half marathon, marathon, 50K, 50 mile, 100K, 100 mile, plus 400 m, 800 m, and 1500 m on the track.

Ultra clocks assume you never stop. Aid stations, night, and terrain are not in the math. A 6:00/km 100 mile is a calculator result, not a plan. For equivalent performances from a race you have already run, use the race time predictor or race equivalents.

Full methodology →

Frequently asked questions