What this result means
Goal pace is a planning number. You pick a distance and either the clock you want or the pace you want to hold, then this tool fills even splits. It is not the three-way solver on the running pace calculator, which wants any two of time, distance, and pace and returns the third.
Use it when the race is not a standard 5K, 10K, half, or marathon, or when you already know the pace you intend to hold and want the implied finish. Trail 25K, a 8 km tempo, a 10 mile tune-up — all of those are custom goals.
A 21.1 kilometre goal in 1:45:00 is 4:59/km, 8:01/mile, and 12.1 km/h. Even splits put 5 km at 24:53 and 10 km at 49:46. Switch the input to pace, type 5:00/km over 15 km, and the finish becomes 1:15:00.
An 8 mile goal at 7:30/mile is 1:00:00. The kilometre equivalent is about 4:40/km. Those identities are the same arithmetic as every other pace page on this site; the difference is the goal-first form.
Calculation method
If you enter time, pace is time divided by distance. If you enter pace, time is pace multiplied by distance. Splits divide that time evenly across each kilometre or mile. Displayed times round to the nearest second.
This is exact arithmetic, not a prediction. It does not fade, add hills, or guess how much you will slow after 30 km.
Even splits ignore a conservative first kilometre and a kick. For a faster second half use the negative-split calculator. For a standard half or marathon, the dedicated race pages lock the official distance.
Frequently asked questions
How is this different from the running pace calculator?
That tool solves any two of time, distance, and pace. This one starts from a goal — a distance plus a time or a pace — and builds even splits for that goal.
What pace is a 1:45 half on a custom distance of 21.1 km?
About 4:59 per kilometre. Enter 21.1 km and 1:45:00 to see the full even-split table.
Can I enter pace instead of time?
Yes. Choose goal pace, type min/km or min/mile, and the finish time follows from distance times pace.