| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 1 | 17.528 | 21/6:08.088 |
| 2 | 2 | 17.515 | 21/6:07.952 |
| 3 | 3 | 17.654 | 21/6:08.879 |
| 4 | 2 | 18.035 | 21/6:11.343 |
| 5 | 3 | 19.264 | 21/6:17.983 |
| 6 | 3 | 17.645 | 21/6:16.743 |
| 7 | 3 | 17.542 | 21/6:15.549 |
| 8 | 3 | 20.072 | 20/6:03.137 |
| 9 | 3 | 19.657 | 20/6:06.471 |
| 10 | 3 | 18.139 | 20/6:06.102 |
| 11 | 4 | 18.688 | 20/6:06.798 |
| 12 | 3 | 17.670 | 20/6:05.682 |
| 13 | 4 | 18.268 | 20/6:05.657 |
| 14 | 4 | 17.642 | 20/6:04.741 |
| 15 | 4 | 18.078 | 20/6:04.529 |
| 16 | 4 | 21.398 | 20/6:08.494 |
| 17 | 4 | 19.017 | 20/6:09.191 |
| 18 | 4 | 18.004 | 20/6:08.684 |
| 19 | 4 | 17.938 | 20/6:08.162 |
| 20 | 4 | 18.020 | 20/6:07.774 |