| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 22 | DQ | ||
| 1 | 12 | 45.36 | ||
| 1 | 20 | 51.00 | ||
| 2 | 17 | 47.56 | ||
| 2 | 13 | 45.80 | ||
| 2 | 11 | 45.35 | ||
| 3 | 1 | 41.01 | ||
| 3 | 2 | 42.08 | ||
| 3 | 6 | 43.43 | ||
| 4 | 7 | 43.48 | ||
| 4 | 9 | 44.29 | ||
| 4 | 21 | 51.62 | ||
| 5 | 15 | 45.99 | ||
| 5 | 4 | 42.84 | ||
| 5 | 22 | NS | ||
| 6 | 3 | 42.67 | ||
| 6 | 19 | 48.55 | ||
| 6 | 18 | 48.02 | ||
| 7 | 8 | 44.24 | ||
| 7 | 10 | 44.50 | ||
| 7 | 22 | NS | ||
| 8 | 16 | 46.80 | ||
| 8 | 14 | 45.93 | ||
| 8 | 5 | 43.11 |