| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 1 | 17.604 | 21/6:09.684 |
| 2 | 1 | 18.096 | 21/6:14.850 |
| 3 | 1 | 17.647 | 21/6:13.429 |
| 4 | 1 | 18.099 | 21/6:15.091 |
| 5 | 2 | 20.101 | 20/6:06.188 |
| 6 | 1 | 17.512 | 20/6:03.530 |
| 7 | 1 | 17.878 | 20/6:02.677 |
| 8 | 2 | 20.291 | 20/6:08.070 |
| 9 | 1 | 17.657 | 20/6:06.411 |
| 10 | 1 | 17.550 | 20/6:04.870 |
| 11 | 1 | 18.066 | 20/6:04.547 |
| 12 | 1 | 18.342 | 20/6:04.738 |
| 13 | 1 | 17.781 | 20/6:04.037 |
| 14 | 1 | 19.756 | 20/6:06.257 |
| 15 | 1 | 17.510 | 20/6:05.187 |
| 16 | 1 | 17.882 | 20/6:04.715 |
| 17 | 1 | 17.975 | 20/6:04.408 |
| 18 | 1 | 18.064 | 20/6:04.234 |
| 19 | 1 | 18.271 | 20/6:04.297 |
| 20 | 1 | 18.471 | 20/6:04.553 |