| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 22 | 55.53 | ||
| 1 | 8 | 45.23 | ||
| 1 | 23 | NS | ||
| 2 | 15 | 50.46 | ||
| 2 | 7 | 44.95 | ||
| 2 | 21 | 54.57 | ||
| 3 | 18 | 51.63 | ||
| 3 | 10 | 47.02 | ||
| 3 | 2 | 41.69 | ||
| 4 | 1 | 41.36 | ||
| 4 | 11 | 47.32 | ||
| 4 | 19 | 52.10 | ||
| 5 | 12 | 49.13 | ||
| 5 | 3 | 41.99 | ||
| 5 | 9 | 46.30 | ||
| 6 | 13 | 49.42 | ||
| 6 | 14 | 50.22 | ||
| 6 | 5 | 43.72 | ||
| 7 | 17 | 51.34 | ||
| 7 | 16 | 51.28 | ||
| 7 | 6 | 44.15 | ||
| 8 | 23 | DQ | ||
| 8 | 4 | 43.06 | ||
| 8 | 20 | 53.38 |