| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 18.032 | 20/6:00.640 |
| 2 | 2 | 17.830 | 21/6:16.551 |
| 3 | 2 | 17.075 | 21/6:10.559 |
| 4 | 2 | 17.859 | 21/6:11.679 |
| 5 | 2 | 17.770 | 21/6:11.977 |
| 6 | 2 | 18.013 | 21/6:13.026 |
| 7 | 2 | 17.859 | 21/6:13.314 |
| 8 | 2 | 18.794 | 21/6:15.984 |
| 9 | 2 | 17.767 | 21/6:15.664 |
| 10 | 2 | 20.072 | 20/6:02.142 |
| 11 | 2 | 17.936 | 20/6:01.831 |
| 12 | 2 | 18.033 | 20/6:01.733 |
| 13 | 1 | 18.225 | 20/6:01.946 |
| 14 | 1 | 18.844 | 20/6:03.013 |
| 15 | 1 | 18.528 | 20/6:03.516 |
| 16 | 2 | 18.195 | 20/6:03.540 |
| 17 | 2 | 17.746 | 20/6:03.033 |
| 18 | 2 | 17.969 | 20/6:02.830 |
| 19 | 2 | 17.930 | 20/6:02.607 |
| 20 | 2 | 18.237 | 20/6:02.714 |