| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 2 | 17.583 | 21/6:09.243 |
| 2 | 3 | 18.031 | 21/6:13.947 |
| 3 | 2 | 17.328 | 21/6:10.594 |
| 4 | 2 | 18.683 | 21/6:16.031 |
| 5 | 2 | 18.261 | 21/6:17.521 |
| 6 | 2 | 17.611 | 21/6:16.239 |
| 7 | 2 | 18.683 | 20/6:00.514 |
| 8 | 3 | 17.329 | 21/6:16.711 |
| 9 | 3 | 18.760 | 20/6:00.598 |
| 10 | 3 | 18.480 | 20/6:01.498 |
| 11 | 3 | 18.366 | 20/6:02.027 |
| 12 | 3 | 17.785 | 20/6:01.500 |
| 13 | 3 | 18.529 | 20/6:02.198 |
| 14 | 3 | 18.444 | 20/6:02.676 |
| 15 | 3 | 16.969 | 20/6:01.123 |
| 16 | 3 | 17.262 | 20/6:00.130 |
| 17 | 3 | 18.440 | 20/6:00.640 |
| 18 | 3 | 17.721 | 20/6:00.294 |
| 19 | 3 | 17.857 | 20/6:00.128 |
| 20 | 3 | 19.242 | 20/6:01.364 |