| Lap | Position | Time | Pace |
|---|---|---|---|
| 1 | 3 | 18.683 | 20/6:13.066 |
| 2 | 3 | 18.428 | 20/6:11.011 |
| 3 | 2 | 18.513 | 20/6:10.826 |
| 4 | 3 | 18.551 | 20/6:10.875 |
| 5 | 3 | 18.537 | 20/6:10.848 |
| 6 | 2 | 18.580 | 20/6:10.973 |
| 7 | 2 | 18.600 | 20/6:11.012 |
| 8 | 2 | 18.665 | 20/6:11.392 |
| 9 | 2 | 19.001 | 20/6:12.351 |
| 10 | 2 | 18.996 | 20/6:13.108 |
| 11 | 2 | 18.758 | 20/6:13.294 |
| 12 | 2 | 19.180 | 20/6:14.153 |
| 13 | 2 | 19.019 | 20/6:14.632 |
| 14 | 2 | 19.032 | 20/6:15.061 |
| 15 | 2 | 18.771 | 20/6:15.085 |
| 16 | 2 | 19.741 | 20/6:16.318 |
| 17 | 3 | 19.229 | 20/6:16.804 |
| 18 | 3 | 19.924 | 20/6:18.008 |
| 19 | 3 | 19.064 | 20/6:18.181 |
| 20 | 3 | 19.285 | 20/6:18.557 |