| # | Time | Athlete(s) |
|---|---|---|
| 1 | 0:49.42 | |
| 2 | 0:50.76 | |
| 3 | 0:52.23 | |
| 4 | 0:52.33 | |
| 5 | 0:52.48 | |
| 6 | 0:54.08 | |
| 7 | 0:54.80 | |
| DQ |
DQ
|
| # | Time | Athlete(s) |
|---|---|---|
| 9 | 0:53.05 | |
| 10 | 0:53.57 | |
| 11 | 0:54.08 | |
| 12 | 0:54.19 | |
| 13 | 0:54.79 | |
| 14 | 0:56.15 | |
| 15 | 0:58.33 | |
| DQ |
DQ
|