| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 20.463 | 21/7:09.723 |
| 2 | 1 | 19.546 | 21/7:00.094 |
| 3 | 2 | 20.580 | 21/7:04.123 |
| 4 | 1 | 20.326 | 21/7:04.804 |
| 5 | 1 | 19.926 | 21/7:03.532 |
| 6 | 1 | 18.813 | 22/7:18.731 |
| 7 | 1 | 21.331 | 21/7:02.955 |
| 8 | 1 | 19.045 | 21/7:00.079 |
| 9 | 1 | 18.502 | 22/7:16.412 |
| 10 | 1 | 21.283 | 22/7:19.593 |
| 11 | 1 | 20.039 | 22/7:19.708 |
| 12 | 1 | 23.258 | 21/7:05.446 |
| 13 | 1 | 20.113 | 21/7:05.210 |
| 14 | 1 | 21.102 | 21/7:06.490 |
| 15 | 1 | 19.449 | 21/7:05.286 |
| 16 | 1 | 20.311 | 21/7:05.364 |
| 17 | 1 | 18.978 | 21/7:03.786 |
| 18 | 1 | 19.994 | 21/7:03.569 |
| 19 | 1 | 19.567 | 21/7:02.902 |
| 20 | 1 | 19.703 | 21/7:02.445 |
| 21 | 1 | 19.049 | 21/7:01.378 |