| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 18.239 | 20/6:04.780 |
| 2 | 3 | 18.809 | 20/6:10.480 |
| 3 | 3 | 19.109 | 20/6:14.380 |
| 4 | 4 | 18.935 | 20/6:15.460 |
| 5 | 2 | 18.195 | 20/6:13.148 |
| 6 | 2 | 18.414 | 20/6:12.337 |
| 7 | 2 | 18.522 | 20/6:12.066 |
| 8 | 2 | 18.371 | 20/6:11.485 |
| 9 | 2 | 18.743 | 20/6:11.860 |
| 10 | 3 | 19.973 | 20/6:14.620 |
| 11 | 2 | 18.377 | 20/6:13.976 |
| 12 | 2 | 18.544 | 20/6:13.718 |
| 13 | 3 | 19.182 | 20/6:14.482 |
| 14 | 2 | 19.462 | 20/6:15.536 |
| 15 | 2 | 19.434 | 20/6:16.412 |
| 16 | 4 | 19.004 | 20/6:16.641 |
| 17 | 3 | 18.363 | 20/6:16.089 |
| 18 | 3 | 19.512 | 20/6:16.876 |
| 19 | 2 | 19.908 | 20/6:17.996 |
| 20 | 2 | 18.657 | 20/6:17.753 |