| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 18.492 | 20/6:09.840 |
| 2 | 3 | 18.238 | 20/6:07.300 |
| 3 | 2 | 18.465 | 20/6:07.967 |
| 4 | 3 | 18.447 | 20/6:08.210 |
| 5 | 3 | 18.228 | 20/6:07.480 |
| 6 | 4 | 22.940 | 19/6:03.565 |
| 7 | 4 | 18.938 | 19/6:03.030 |
| 8 | 3 | 17.672 | 20/6:18.550 |
| 9 | 3 | 18.081 | 20/6:16.669 |
| 10 | 2 | 18.482 | 20/6:15.966 |
| 11 | 2 | 18.833 | 20/6:16.029 |
| 12 | 4 | 20.888 | 19/6:00.531 |
| 13 | 3 | 18.180 | 20/6:18.283 |
| 14 | 3 | 17.919 | 20/6:16.861 |
| 15 | 3 | 17.818 | 20/6:15.495 |
| 16 | 3 | 19.797 | 20/6:16.773 |
| 17 | 4 | 19.515 | 20/6:17.568 |
| 18 | 4 | 18.132 | 20/6:16.739 |
| 19 | 4 | 19.198 | 20/6:17.119 |
| 20 | 3 | 18.557 | 20/6:16.820 |