| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 4 | 18.182 | 20/6:03.064 |
| 2 | 4 | 18.210 | 20/6:03.092 |
| 3 | 2 | 18.041 | 20/6:02.886 |
| 4 | 2 | 18.302 | 20/6:03.675 |
| 5 | 2 | 18.403 | 20/6:04.552 |
| 6 | 2 | 18.346 | 20/6:04.946 |
| 7 | 2 | 18.299 | 20/6:05.094 |
| 8 | 2 | 18.543 | 20/6:05.815 |
| 9 | 2 | 18.336 | 20/6:05.915 |
| 10 | 2 | 18.632 | 20/6:06.588 |
| 11 | 2 | 18.533 | 20/6:06.958 |
| 12 | 2 | 18.653 | 20/6:07.466 |
| 13 | 2 | 18.539 | 20/6:07.721 |
| 14 | 2 | 18.724 | 20/6:08.204 |
| 15 | 2 | 18.561 | 20/6:08.405 |
| 16 | 2 | 18.541 | 20/6:08.556 |
| 17 | 2 | 18.949 | 20/6:09.169 |
| 18 | 2 | 18.949 | 20/6:09.714 |
| 19 | 3 | 18.845 | 20/6:10.092 |
| 20 | 3 | 19.277 | 20/6:10.865 |