| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 7 | 45.10 | ||
| 1 | 20 | DQ | ||
| 1 | 17 | 51.39 | ||
| 2 | 8 | 46.39 | ||
| 2 | 5 | 43.31 | ||
| 2 | 20 | NS | ||
| 3 | 16 | 51.03 | ||
| 3 | 15 | 51.02 | ||
| 3 | 4 | 42.69 | ||
| 4 | 18 | 52.73 | ||
| 4 | 20 | DQ | ||
| 4 | 11 | 47.81 | ||
| 5 | 10 | 47.12 | ||
| 5 | 20 | NS | ||
| 5 | 14 | 50.37 | ||
| 6 | 19 | 53.86 | ||
| 6 | 3 | 42.11 | ||
| 6 | 9 | 47.01 | ||
| 7 | 1 | 39.82 | ||
| 7 | 12 | 48.72 | ||
| 7 | 2 | 41.18 | ||
| 8 | 20 | NS | ||
| 8 | 6 | 44.03 | ||
| 8 | 13 | 50.14 |