| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 17.829 | 21/6:14.409 |
| 2 | 3 | 17.812 | 21/6:14.231 |
| 3 | 1 | 17.808 | 21/6:14.143 |
| 4 | 1 | 17.962 | 21/6:14.908 |
| 5 | 1 | 18.370 | 21/6:17.080 |
| 6 | 1 | 17.653 | 21/6:16.019 |
| 7 | 1 | 18.116 | 21/6:16.650 |
| 8 | 1 | 17.792 | 21/6:16.273 |
| 9 | 1 | 18.204 | 21/6:16.941 |
| 10 | 1 | 18.043 | 21/6:17.137 |
| 11 | 1 | 17.846 | 21/6:16.921 |
| 12 | 1 | 17.918 | 21/6:16.868 |
| 13 | 1 | 18.311 | 21/6:17.457 |
| 14 | 1 | 18.065 | 21/6:17.594 |
| 15 | 1 | 18.999 | 20/6:00.971 |
| 16 | 1 | 18.188 | 20/6:01.145 |
| 17 | 1 | 17.696 | 20/6:00.720 |
| 18 | 1 | 18.791 | 20/6:01.559 |
| 19 | 1 | 17.902 | 20/6:01.374 |
| 20 | 1 | 17.784 | 20/6:01.089 |