| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 20 | 49.21 | ||
| 1 | 23 | 53.50 | ||
| 1 | 7 | 42.79 | ||
| 2 | 15 | 47.94 | ||
| 2 | 16 | 48.37 | ||
| 2 | 5 | 42.09 | ||
| 3 | 14 | 47.87 | ||
| 3 | 17 | 48.77 | ||
| 3 | 6 | 42.10 | ||
| 4 | 3 | 41.30 | ||
| 4 | 9 | 45.87 | ||
| 4 | 11 | 46.42 | ||
| 5 | 13 | 47.65 | ||
| 5 | 10 | 46.13 | ||
| 5 | 1 | 40.09 | ||
| 6 | 24 | DQ | ||
| 6 | 12 | 46.56 | ||
| 6 | 4 | 42.08 | ||
| 7 | 21 | 49.56 | ||
| 7 | 2 | 40.51 | ||
| 7 | 18 | 48.98 | ||
| 8 | 22 | 51.71 | ||
| 8 | 19 | 49.12 | ||
| 8 | 8 | 44.88 |