| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 18 | 52.54 | ||
| 1 | 12 | 51.27 | ||
| 1 | 23 | DQ | ||
| 2 | 17 | 52.35 | ||
| 2 | 6 | 48.75 | ||
| 2 | 9 | 49.58 | ||
| 3 | 19 | 52.55 | ||
| 3 | 15 | 51.95 | ||
| 3 | 8 | 49.24 | ||
| 4 | 3 | 43.51 | ||
| 4 | 5 | 46.02 | ||
| 4 | 2 | 42.00 | ||
| 5 | 4 | 45.05 | ||
| 5 | 1 | 41.07 | ||
| 5 | 10 | 50.53 | ||
| 6 | 22 | 59.11 | ||
| 6 | 23 | NS | ||
| 6 | 14 | 51.83 | ||
| 7 | 13 | 51.38 | ||
| 7 | 7 | 48.99 | ||
| 7 | 21 | 57.73 | ||
| 8 | 11 | 51.11 | ||
| 8 | 16 | 52.09 | ||
| 8 | 20 | 56.87 |