| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 4 | 19.907 | N/A |
| 2 | 4 | 17.671 | 21/6:13.327 |
| 3 | 4 | 17.347 | 21/6:10.087 |
| 4 | 4 | 17.284 | 21/6:08.587 |
| 5 | 4 | 16.872 | 21/6:05.777 |
| 6 | 4 | 17.683 | 21/6:07.335 |
| 7 | 4 | 17.549 | 21/6:07.927 |
| 8 | 4 | 17.352 | 21/6:07.787 |
| 9 | 4 | 17.929 | 21/6:09.124 |
| 10 | 4 | 17.133 | 21/6:08.395 |
| 11 | 4 | 17.549 | 21/6:08.645 |
| 12 | 4 | 17.179 | 21/6:08.176 |
| 13 | 4 | 17.164 | 21/6:07.760 |
| 14 | 4 | 18.728 | 21/6:09.814 |
| 15 | 4 | 18.539 | 21/6:11.305 |
| 16 | 4 | 18.302 | 21/6:12.281 |
| 17 | 4 | 17.792 | 21/6:12.498 |
| 18 | 4 | 18.122 | 21/6:13.077 |
| 19 | 4 | 19.331 | 21/6:14.935 |
| 20 | 4 | 19.710 | 21/6:16.997 |
| 21 | 4 | 18.113 | 21/6:17.256 |