| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 18 | 51.21 | ||
| 1 | 16 | 50.21 | ||
| 1 | 9 | 45.12 | ||
| 2 | 24 | DQ | ||
| 2 | 6 | 42.39 | ||
| 2 | 15 | 48.42 | ||
| 3 | 22 | 53.09 | ||
| 3 | 11 | 46.82 | ||
| 3 | 3 | 41.05 | ||
| 4 | 1 | 39.40 | ||
| 4 | 2 | 40.52 | ||
| 4 | 17 | 50.77 | ||
| 5 | 19 | 51.28 | ||
| 5 | 8 | 45.11 | ||
| 5 | 5 | 42.32 | ||
| 6 | 13 | 47.45 | ||
| 6 | 4 | 41.91 | ||
| 6 | 20 | 51.81 | ||
| 7 | 23 | 53.90 | ||
| 7 | 7 | 45.08 | ||
| 7 | 14 | 47.46 | ||
| 8 | 10 | 45.71 | ||
| 8 | 21 | 51.89 | ||
| 8 | 12 | 46.90 |