| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 1 | 18.186 | 20/6:03.720 |
| 2 | 2 | 18.464 | 20/6:06.500 |
| 3 | 2 | 20.188 | 20/6:18.920 |
| 4 | 2 | 18.671 | 20/6:17.545 |
| 5 | 2 | 17.929 | 20/6:13.752 |
| 6 | 2 | 20.155 | 20/6:18.643 |
| 7 | 2 | 19.513 | 19/6:01.288 |
| 8 | 3 | 19.272 | 19/6:01.898 |
| 9 | 3 | 17.863 | 20/6:18.313 |
| 10 | 3 | 21.382 | 19/6:04.084 |
| 11 | 3 | 21.876 | 19/6:08.771 |
| 12 | 3 | 19.831 | 19/6:09.439 |
| 13 | 3 | 18.888 | 19/6:08.626 |
| 14 | 3 | 22.319 | 19/6:12.586 |
| 15 | 3 | 18.570 | 19/6:11.269 |
| 16 | 3 | 18.304 | 19/6:09.801 |
| 17 | 3 | 18.893 | 19/6:09.163 |
| 18 | 3 | 20.072 | 19/6:09.841 |
| 19 | 4 | 21.065 | 19/6:11.441 |