| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 22 | DQ | ||
| 1 | 18 | 51.84 | ||
| 1 | 22 | NS | ||
| 2 | 19 | 52.16 | ||
| 2 | 6 | 45.77 | ||
| 2 | 11 | 48.34 | ||
| 3 | 13 | 48.74 | ||
| 3 | 15 | 50.41 | ||
| 3 | 1 | 43.98 | ||
| 4 | 16 | 50.66 | ||
| 4 | 3 | 44.14 | ||
| 4 | 4 | 44.80 | ||
| 5 | 17 | 51.59 | ||
| 5 | 9 | 47.64 | ||
| 5 | 7 | 46.14 | ||
| 6 | 2 | 44.08 | ||
| 6 | 14 | 49.35 | ||
| 6 | 10 | 48.30 | ||
| 7 | 21 | 53.79 | ||
| 7 | 22 | NS | ||
| 7 | 12 | 48.72 | ||
| 8 | 5 | 45.32 | ||
| 8 | 20 | 52.74 | ||
| 8 | 8 | 46.97 |