| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 18.461 | 20/6:09.220 |
| 2 | 4 | 18.227 | 20/6:06.880 |
| 3 | 4 | 18.441 | 20/6:07.527 |
| 4 | 4 | 18.824 | 20/6:09.765 |
| 5 | 3 | 18.196 | 20/6:08.596 |
| 6 | 4 | 18.537 | 20/6:08.953 |
| 7 | 4 | 18.670 | 20/6:09.589 |
| 8 | 4 | 19.490 | 20/6:12.115 |
| 9 | 4 | 18.914 | 20/6:12.800 |
| 10 | 4 | 18.514 | 20/6:12.548 |
| 11 | 4 | 19.047 | 20/6:13.311 |
| 12 | 4 | 19.159 | 20/6:14.133 |
| 13 | 4 | 18.415 | 20/6:13.685 |
| 14 | 4 | 18.936 | 20/6:14.044 |
| 15 | 4 | 19.529 | 20/6:15.147 |
| 16 | 4 | 18.050 | 20/6:14.262 |
| 17 | 4 | 18.635 | 20/6:14.171 |
| 18 | 4 | 18.130 | 20/6:13.528 |
| 19 | 4 | 18.582 | 20/6:13.428 |
| 20 | 4 | 19.760 | 20/6:14.517 |