| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 7 | 52.39 (52.39) |
||
| 2 | 5 | 51.16 (53.91) |
||
| 2 | 8 | 54.08 (56.27) |
||
| 3 | 2 | 49.76 (49.76) |
||
| 3 | 12 | DQ (1:14.34) |
||
| 4 | 6 | 51.73 (51.73) |
||
| 4 | 10 | 57.74 (57.74) |
||
| 5 | 1 | 49.62 (56.55) |
||
| 5 | 11 | 1:04.63 (1:06.55) |
||
| 6 | 3 | 49.77 (49.77) |
||
| 7 | 4 | 50.72 (50.72) |
||
| 7 | 12 | DQ (1:07.52) |
||
| 8 | 9 | 56.27 (56.27) |