Race Split Times
Every split for a target finish time — what the watch should say at each marker.
Runs entirely in your browser. Nothing is uploaded, logged or stored.
Finish time
1:45:00
- Even pace per kilometre
- 4:59
- Even pace per mile
- 8:01
- What the watch should say
- 1 km — 04:58 2 km — 09:57 3 km — 14:55 4 km — 19:54 5 km — 24:53 6 km — 29:51 7 km — 34:50 8 km — 39:48 9 km — 44:47 10 km — 49:46 11 km — 54:44 12 km — 59:43 13 km — 1:04:41 14 km — 1:09:40 15 km — 1:14:39 16 km — 1:19:37 17 km — 1:24:36 18 km — 1:29:35 19 km — 1:34:33 20 km — 1:39:32 21 km — 1:44:30 21.0975 km — 1:45:00 (partial split)
Split by split
| At | This split | Elapsed |
|---|---|---|
| 1 km | 04:58 | 04:58 |
| 2 km | 04:58 | 09:57 |
| 3 km | 04:58 | 14:55 |
| 4 km | 04:58 | 19:54 |
| 5 km | 04:58 | 24:53 |
| 6 km | 04:58 | 29:51 |
| 7 km | 04:58 | 34:50 |
| 8 km | 04:58 | 39:48 |
| 9 km | 04:58 | 44:47 |
| 10 km | 04:58 | 49:46 |
| 11 km | 04:58 | 54:44 |
| 12 km | 04:58 | 59:43 |
| 13 km | 04:58 | 1:04:41 |
| 14 km | 04:58 | 1:09:40 |
| 15 km | 04:58 | 1:14:39 |
| 16 km | 04:58 | 1:19:37 |
| 17 km | 04:58 | 1:24:36 |
| 18 km | 04:58 | 1:29:35 |
| 19 km | 04:58 | 1:34:33 |
| 20 km | 04:58 | 1:39:32 |
| 21 km | 04:58 | 1:44:30 |
| 21.0975 km part | 00:29 | 1:45:00 |
Pick a finish time and see what the watch should read at every marker. These are even splits — the same pace throughout — which is the plan to measure yourself against rather than the one to follow blindly.
How it works
The finish time is divided evenly across the distance. Where the distance does not divide into whole intervals — a marathon is 42 kilometres and 195 metres — the last one is marked as partial rather than rounded up, so nobody reads it as a pace that suddenly improved.
Even splits are the reference, not the recipe. Most well-run races are slightly negative — the second half a little faster than the first — because going out fast costs more later than it gains early. Use these as the line you should not be ahead of.
Examples
| Case | Input | Result |
|---|---|---|
| A half marathon in 1:45 | half, 1:45:00, every kilometre | 4:58 /km — 22 splits, the last one partial |
| A marathon in five-kilometre blocks | marathon, 3:30:00, every 5 km | 9 blocks, the last 2.195 km |
Frequently asked questions
Why is the last split shorter?
Because the distance does not divide evenly. A marathon is 42 km plus 195 m, so the last kilometre marker is not the finish. It is marked as partial so the shorter time is not mistaken for a late surge.
Should I actually run even splits?
As a target, yes; as a rule, not quite. Most good races are run slightly negative, with the second half a shade faster. What even splits give you is the line to compare against — being ahead of it early is the most common way to run a bad race.
Do these account for the hills?
No. Nothing here knows anything about the course. On a hilly route the even-effort splits are not the even-time ones, and no calculator can tell you the difference without the elevation profile.
Good to know
- Up to sixty splits. Beyond that the list stops being something anybody reads, let alone carries.