| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 1 | 20.220 | 18/6:03.960 |
| 2 | 1 | 20.543 | 18/6:06.867 |
| 3 | 2 | 20.094 | 18/6:05.142 |
| 4 | 1 | 19.721 | 18/6:02.601 |
| 5 | 2 | 20.484 | 18/6:03.823 |
| 6 | 2 | 20.094 | 18/6:03.468 |
| 7 | 1 | 20.228 | 18/6:03.559 |
| 8 | 1 | 20.146 | 18/6:03.443 |
| 9 | 1 | 20.255 | 18/6:03.570 |
| 10 | 1 | 20.107 | 18/6:03.406 |
| 11 | 1 | 20.337 | 18/6:03.647 |
| 12 | 2 | 20.510 | 18/6:04.108 |
| 13 | 2 | 20.476 | 18/6:04.452 |
| 14 | 2 | 20.379 | 18/6:04.621 |
| 15 | 2 | 20.644 | 18/6:05.086 |
| 16 | 1 | 20.539 | 18/6:05.374 |
| 17 | 1 | 20.193 | 18/6:05.262 |
| 18 | 1 | 20.949 | 18/6:05.919 |