Negative Split Planner
Plan a negative split race strategy. Run the second half faster than the first for a strong finish.
::
1%3%8%
First Half
1:51:00
Slower half
Second Half
1:39:00
3% faster
| # | Distance | Split | Cumulative | Pace |
|---|---|---|---|---|
| 1 | 1 km | 5:03 | 5:03 | 5:03/km |
| 2 | 2 km | 5:03 | 10:06 | 5:03/km |
| 3 | 3 km | 5:03 | 15:09 | 5:03/km |
| 4 | 4 km | 5:03 | 20:13 | 5:03/km |
| 5 | 5 km | 5:03 | 25:16 | 5:03/km |
| 6 | 6 km | 5:03 | 30:19 | 5:03/km |
| 7 | 7 km | 5:03 | 35:22 | 5:03/km |
| 8 | 8 km | 5:03 | 40:25 | 5:03/km |
| 9 | 9 km | 5:03 | 45:28 | 5:03/km |
| 10 | 10 km | 5:03 | 50:32 | 5:03/km |
| 11 | 11 km | 5:03 | 55:35 | 5:03/km |
| 12 | 12 km | 5:03 | 1:00:38 | 5:03/km |
| 13 | 13 km | 5:03 | 1:05:41 | 5:03/km |
| 14 | 14 km | 5:03 | 1:10:44 | 5:03/km |
| 15 | 15 km | 5:03 | 1:15:47 | 5:03/km |
| 16 | 16 km | 5:03 | 1:20:51 | 5:03/km |
| 17 | 17 km | 5:03 | 1:25:54 | 5:03/km |
| 18 | 18 km | 5:03 | 1:30:57 | 5:03/km |
| 19 | 19 km | 5:03 | 1:36:00 | 5:03/km |
| 20 | 20 km | 5:03 | 1:41:03 | 5:03/km |
| 21 | 21 km | 5:03 | 1:46:06 | 5:03/km |
| 22 | 22 km | 4:54 | 1:51:00 | 4:54/km |
| 23 | 23 km | 4:54 | 1:55:55 | 4:54/km |
| 24 | 24 km | 4:54 | 2:00:49 | 4:54/km |
| 25 | 25 km | 4:54 | 2:05:43 | 4:54/km |
| 26 | 26 km | 4:54 | 2:10:37 | 4:54/km |
| 27 | 27 km | 4:54 | 2:15:31 | 4:54/km |
| 28 | 28 km | 4:54 | 2:20:25 | 4:54/km |
| 29 | 29 km | 4:54 | 2:25:19 | 4:54/km |
| 30 | 30 km | 4:54 | 2:30:13 | 4:54/km |
| 31 | 31 km | 4:54 | 2:35:07 | 4:54/km |
| 32 | 32 km | 4:54 | 2:40:01 | 4:54/km |
| 33 | 33 km | 4:54 | 2:44:55 | 4:54/km |
| 34 | 34 km | 4:54 | 2:49:49 | 4:54/km |
| 35 | 35 km | 4:54 | 2:54:43 | 4:54/km |
| 36 | 36 km | 4:54 | 2:59:37 | 4:54/km |
| 37 | 37 km | 4:54 | 3:04:31 | 4:54/km |
| 38 | 38 km | 4:54 | 3:09:26 | 4:54/km |
| 39 | 39 km | 4:54 | 3:14:20 | 4:54/km |
| 40 | 40 km | 4:54 | 3:19:14 | 4:54/km |
| 41 | 41 km | 4:54 | 3:24:08 | 4:54/km |
| 42 | 42 km | 4:54 | 3:29:02 | 4:54/km |
| 43 | 0.20 km | 0:57 | 3:29:59 | 4:54/km |
Why Run Negative Splits?
A negative split means running the second half of a race faster than the first. This is considered the optimal race strategy because it prevents early fatigue from going out too fast and allows you to finish strong when others are fading.
A 2-3% negative split is typical for elite marathoners. The world record marathon has often been run with near-even or slightly negative splits. For most runners, aiming for 2-5% faster in the second half is a good target.
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