| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 20.832 | 21/7:17.472 |
| 2 | 3 | 20.896 | 21/7:18.144 |
| 3 | 3 | 19.495 | 21/7:08.561 |
| 4 | 3 | 20.455 | 21/7:08.809 |
| 5 | 3 | 20.023 | 21/7:07.144 |
| 6 | 3 | 19.615 | 21/7:04.606 |
| 7 | 3 | 20.608 | 21/7:05.772 |
| 8 | 3 | 20.412 | 21/7:06.132 |
| 9 | 4 | 26.151 | 21/7:19.803 |
| 10 | 4 | 21.945 | 20/7:00.864 |
| 11 | 4 | 21.260 | 20/7:01.258 |
| 12 | 4 | 21.586 | 20/7:02.130 |
| 13 | 4 | 25.745 | 20/7:09.266 |
| 14 | 4 | 21.289 | 20/7:09.017 |
| 15 | 4 | 19.243 | 20/7:06.073 |
| 16 | 4 | 19.867 | 20/7:04.277 |
| 17 | 4 | 20.892 | 20/7:03.899 |
| 18 | 4 | 21.131 | 20/7:03.828 |
| 19 | 4 | 22.656 | 20/7:05.369 |
| 20 | 4 | 24.016 | 20/7:08.117 |