| # | Time | Athlete(s) |
|---|---|---|
| 1 | 0:49.54 | |
| 2 | 0:50.09 | |
| 3 | 0:50.32 | |
| 4 | 0:50.34 | |
| 5 | 0:50.43 | |
| 6 | 0:51.01 | |
| 7 | 0:51.08 | |
| 8 | 0:51.75 |
| # | Time | Athlete(s) |
|---|---|---|
| 9 | 0:51.48 | |
| 10 | 0:51.74 | |
| 11 | 0:52.33 | |
| 12 | 0:53.36 | |
| 13 | 0:53.71 | |
| 14 | 0:53.97 | |
| 15 | 0:54.39 | |
| DQ |
DQ
|