| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 25.052 | N/A |
| 2 | 2 | 23.147 | 21/8:07.992 |
| 3 | 2 | 23.050 | 21/8:07.022 |
| 4 | 2 | 24.607 | 21/8:17.078 |
| 5 | 2 | 22.359 | 21/8:10.867 |
| 6 | 2 | 22.586 | 21/8:08.048 |
| 7 | 3 | 24.925 | 21/8:13.965 |
| 8 | 4 | 28.727 | 20/8:04.854 |
| 9 | 4 | 28.760 | 20/8:15.684 |
| 10 | 4 | 28.130 | 20/8:22.777 |
| 11 | 4 | 39.369 | 19/8:23.024 |
| 12 | 4 | 26.969 | 19/8:23.899 |
| 13 | 4 | 29.474 | 18/8:01.364 |
| 14 | 4 | 29.760 | 18/8:05.180 |
| 15 | 4 | 32.188 | 18/8:11.399 |
| 16 | 5 | 36.364 | 18/8:21.522 |
| 17 | 5 | 31.714 | 18/8:25.439 |
| 18 | 5 | 27.021 | 18/8:24.202 |