| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 9 | 46.23 | ||
| 1 | 7 | 45.04 | ||
| 1 | 22 | NS | ||
| 2 | 15 | 50.64 | ||
| 2 | 20 | 54.34 | ||
| 3 | 16 | 50.66 | ||
| 3 | 5 | 44.22 | ||
| 3 | 3 | 43.00 | ||
| 4 | 11 | 47.02 | ||
| 4 | 1 | 42.06 | ||
| 4 | 4 | 43.85 | ||
| 5 | 18 | 52.01 | ||
| 5 | 8 | 45.19 | ||
| 5 | 6 | 44.60 | ||
| 6 | 14 | 49.49 | ||
| 6 | 2 | 42.49 | ||
| 6 | 13 | 48.42 | ||
| 7 | 19 | 53.39 | ||
| 7 | 12 | 48.06 | ||
| 7 | 10 | 46.58 | ||
| 8 | 21 | 59.04 | ||
| 8 | 22 | DQ | ||
| 8 | 17 | 51.05 |