| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 4 | 28.096 | N/A |
| 2 | 5 | 25.624 | 19/8:09.328 |
| 3 | 5 | 24.661 | 19/8:00.661 |
| 4 | 6 | 25.200 | 19/8:01.006 |
| 5 | 6 | 27.111 | 19/8:09.778 |
| 6 | 4 | 24.868 | 19/8:06.966 |
| 7 | 4 | 24.166 | 19/8:02.986 |
| 8 | 4 | 24.394 | 19/8:00.729 |
| 9 | 4 | 25.232 | 19/8:00.922 |
| 10 | 4 | 24.629 | 20/8:24.964 |
| 11 | 4 | 25.399 | 19/8:00.407 |
| 12 | 4 | 25.116 | 19/8:00.386 |
| 13 | 5 | 25.182 | 19/8:00.469 |
| 14 | 5 | 24.794 | 19/8:00.001 |
| 15 | 5 | 24.597 | 20/8:24.416 |
| 16 | 5 | 25.716 | 19/8:00.122 |
| 17 | 5 | 25.556 | 19/8:00.621 |
| 18 | 5 | 26.781 | 19/8:02.358 |
| 19 | 5 | 25.527 | 19/8:02.649 |