| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 18.195 | 20/6:03.900 |
| 2 | 3 | 17.870 | 20/6:00.650 |
| 3 | 3 | 18.202 | 20/6:01.780 |
| 4 | 3 | 18.369 | 20/6:03.180 |
| 5 | 3 | 18.034 | 20/6:02.680 |
| 6 | 4 | 18.944 | 20/6:05.380 |
| 7 | 4 | 18.423 | 20/6:05.820 |
| 8 | 4 | 18.448 | 20/6:06.212 |
| 9 | 4 | 18.436 | 20/6:06.491 |
| 10 | 4 | 18.579 | 20/6:07.000 |
| 11 | 4 | 18.436 | 20/6:07.156 |
| 12 | 4 | 18.682 | 20/6:07.697 |
| 13 | 4 | 18.678 | 20/6:08.148 |
| 14 | 4 | 18.804 | 20/6:08.714 |
| 15 | 4 | 18.878 | 20/6:09.304 |
| 16 | 4 | 18.861 | 20/6:09.799 |
| 17 | 4 | 19.288 | 20/6:10.738 |
| 18 | 4 | 19.058 | 20/6:11.317 |
| 19 | 4 | 18.542 | 20/6:11.292 |
| 20 | 4 | 19.071 | 20/6:11.798 |