What this result means
Even splits assume the same pace from start to finish. This calculator takes any distance and any target time and builds a checkpoint table — each kilometre, each mile, or both, depending on your unit setting.
Use it when the distance is not 5K, 10K, half, or marathon, or when you want a full table rather than a race-page summary. Those race tools already show splits for their fixed distance. This page leaves distance free.
A 15 km race in 1:05:00 is 4:20/km. The table lists 4:20, 8:40, 13:00, and so on through 15 km. A 10 mile target of 1:10:00 is 7:00/mile. Real races often include a slower first kilometre and a faster close; the table still shows even running.
A 25 km in 1:50:00 is 4:24/km. Halfway (12.5 km) should read 55:00 on even splits. An 8 km time trial in 32:00 is 4:00/km, so 2 km is 8:00, 4 km is 16:00, and 5 miles would not apply unless you switch the header to miles. Change distance or time and every row recalculates from the same identity.
Calculation method
Each split time is target time multiplied by (split distance ÷ race distance). Displayed times round to the nearest second. The underlying math uses seconds and kilometres.
This is exact arithmetic. It does not add a “bank time” or “positive split” mode. If you want a slower first half, enter a slower early checkpoint yourself.
Even is a tactic. Crowds, hills, and aid stations will not match every row. The last split still has to make the finish clock true.
Frequently asked questions
What is an even-split table?
A list of checkpoint times that assume constant pace. At halfway you should have used half the target time.
Can I plan a positive split?
Not automatically. This tool only divides time evenly. For a slower second half, set your own early and late targets.
Does this work for ultras?
The arithmetic works for any distance you enter. It does not model fatigue, night running, or aid-station time.
What splits is a 1:05:00 15 km?
4:20 per kilometre even. 5 km at 21:40, 10 km at 43:20, finish 1:05:00. Enter 15 km and 1:05:00 to see every row.