| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 17.610 | 21/6:09.810 |
| 2 | 1 | 17.734 | 21/6:11.112 |
| 3 | 2 | 17.996 | 21/6:13.380 |
| 4 | 2 | 17.694 | 21/6:12.929 |
| 5 | 1 | 17.814 | 21/6:13.162 |
| 6 | 1 | 18.553 | 21/6:15.904 |
| 7 | 1 | 18.224 | 21/6:16.875 |
| 8 | 1 | 17.313 | 21/6:15.212 |
| 9 | 1 | 18.668 | 21/6:17.081 |
| 10 | 2 | 18.251 | 21/6:17.700 |
| 11 | 2 | 18.367 | 20/6:00.407 |
| 12 | 2 | 17.927 | 20/6:00.252 |
| 13 | 2 | 18.856 | 20/6:01.549 |
| 14 | 2 | 17.695 | 20/6:01.003 |
| 15 | 2 | 18.298 | 20/6:01.333 |
| 16 | 2 | 18.036 | 20/6:01.295 |
| 17 | 2 | 18.343 | 20/6:01.622 |
| 18 | 2 | 18.470 | 20/6:02.054 |
| 19 | 2 | 18.922 | 20/6:02.917 |
| 20 | 2 | 17.718 | 20/6:02.489 |