| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 17.511 | 21/6:07.731 |
| 2 | 1 | 17.353 | 21/6:06.072 |
| 3 | 1 | 17.502 | 21/6:06.562 |
| 4 | 1 | 17.555 | 21/6:07.085 |
| 5 | 1 | 17.896 | 21/6:08.831 |
| 6 | 1 | 17.494 | 21/6:08.588 |
| 7 | 1 | 18.576 | 21/6:11.661 |
| 8 | 1 | 17.775 | 21/6:11.863 |
| 9 | 1 | 17.576 | 21/6:11.555 |
| 10 | 1 | 18.128 | 21/6:12.469 |
| 11 | 1 | 17.985 | 21/6:12.943 |
| 12 | 1 | 18.410 | 21/6:14.082 |
| 13 | 1 | 18.181 | 21/6:14.676 |
| 14 | 1 | 18.676 | 21/6:15.927 |
| 15 | 1 | 18.246 | 21/6:16.410 |
| 16 | 1 | 18.420 | 21/6:17.060 |
| 17 | 1 | 18.399 | 21/6:17.608 |
| 18 | 1 | 18.037 | 21/6:17.673 |
| 19 | 1 | 17.568 | 21/6:17.213 |
| 20 | 1 | 17.925 | 21/6:17.174 |
| 21 | 1 | 17.765 | 21/6:16.978 |