| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 29.871 | N/A |
| 2 | 3 | 19.706 | 21/7:03.991 |
| 3 | 1 | 19.875 | 21/7:05.681 |
| 4 | 1 | 18.970 | 21/7:00.211 |
| 5 | 1 | 19.244 | 22/7:18.294 |
| 6 | 1 | 19.408 | 22/7:18.123 |
| 7 | 1 | 19.730 | 22/7:19.136 |
| 8 | 1 | 23.396 | 21/7:10.811 |
| 9 | 1 | 19.066 | 21/7:08.358 |
| 10 | 1 | 22.089 | 21/7:13.168 |
| 11 | 1 | 19.343 | 21/7:11.525 |
| 12 | 1 | 19.198 | 21/7:09.916 |
| 13 | 1 | 19.486 | 21/7:09.056 |
| 14 | 1 | 22.085 | 21/7:12.326 |
| 15 | 1 | 19.596 | 21/7:11.573 |
| 16 | 2 | 23.938 | 21/7:16.711 |
| 17 | 2 | 24.711 | 20/7:01.557 |
| 18 | 3 | 32.277 | 20/7:14.591 |
| 19 | 3 | 20.847 | 20/7:14.111 |
| 20 | 3 | 19.543 | 20/7:12.379 |