| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 18.319 | 20/6:06.038 |
| 2 | 2 | 18.037 | 20/6:03.056 |
| 3 | 2 | 18.576 | 20/6:06.213 |
| 4 | 3 | 18.455 | 20/6:06.935 |
| 5 | 3 | 18.360 | 20/6:06.988 |
| 6 | 3 | 18.162 | 20/6:06.363 |
| 7 | 3 | 18.229 | 20/6:06.108 |
| 8 | 3 | 18.416 | 20/6:06.385 |
| 9 | 3 | 18.483 | 20/6:06.748 |
| 10 | 3 | 18.436 | 20/6:06.946 |
| 11 | 3 | 18.483 | 20/6:07.192 |
| 12 | 3 | 18.613 | 20/6:07.615 |
| 13 | 2 | 18.542 | 20/6:07.863 |
| 14 | 2 | 18.452 | 20/6:07.947 |
| 15 | 2 | 18.738 | 20/6:08.401 |
| 16 | 2 | 18.496 | 20/6:08.496 |
| 17 | 2 | 19.937 | 20/6:10.275 |
| 18 | 2 | 18.504 | 20/6:10.264 |
| 19 | 2 | 18.718 | 20/6:10.048 |
| 20 | 3 | 18.873 | 20/6:10.829 |