| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 18.661 | 20/6:13.022 |
| 2 | 2 | 18.341 | 20/6:10.002 |
| 3 | 1 | 18.285 | 20/6:08.058 |
| 4 | 2 | 18.824 | 20/6:10.555 |
| 5 | 2 | 18.490 | 20/6:10.404 |
| 6 | 3 | 18.904 | 20/6:11.683 |
| 7 | 3 | 18.882 | 20/6:12.534 |
| 8 | 3 | 18.886 | 20/6:13.182 |
| 9 | 3 | 18.733 | 20/6:13.346 |
| 10 | 3 | 18.764 | 20/6:13.054 |
| 11 | 3 | 18.586 | 20/6:13.374 |
| 12 | 3 | 19.653 | 20/6:15.015 |
| 13 | 3 | 18.977 | 20/6:15.363 |
| 14 | 3 | 18.941 | 20/6:15.061 |
| 15 | 3 | 19.105 | 20/6:16.042 |
| 16 | 3 | 19.123 | 20/6:16.443 |
| 17 | 2 | 18.897 | 20/6:16.531 |
| 18 | 2 | 19.118 | 20/6:16.855 |
| 19 | 2 | 18.762 | 20/6:16.770 |
| 20 | 2 | 20.238 | 20/6:18.017 |