| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 17.359 | 21/6:04.539 |
| 2 | 1 | 17.476 | 21/6:05.767 |
| 3 | 2 | 18.213 | 21/6:11.336 |
| 4 | 1 | 17.096 | 21/6:08.256 |
| 5 | 1 | 18.044 | 21/6:10.390 |
| 6 | 1 | 17.695 | 21/6:10.591 |
| 7 | 1 | 18.310 | 21/6:12.579 |
| 8 | 1 | 17.383 | 21/6:11.637 |
| 9 | 1 | 17.478 | 21/6:11.126 |
| 10 | 1 | 17.934 | 21/6:11.675 |
| 11 | 1 | 18.496 | 21/6:13.197 |
| 12 | 2 | 18.263 | 21/6:14.057 |
| 13 | 2 | 17.514 | 21/6:13.575 |
| 14 | 2 | 18.067 | 21/6:13.992 |
| 15 | 1 | 17.917 | 21/6:14.143 |
| 16 | 1 | 17.581 | 21/6:13.834 |
| 17 | 1 | 17.677 | 21/6:13.680 |
| 18 | 1 | 17.937 | 21/6:13.847 |
| 19 | 1 | 18.341 | 21/6:14.442 |
| 20 | 1 | 18.575 | 21/6:15.224 |
| 21 | 2 | 18.306 | 21/6:15.662 |