| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 10 | 51.10 | ||
| 1 | 20 | 57.48 | ||
| 1 | 12 | 53.21 | ||
| 2 | 21 | 57.63 | ||
| 2 | 4 | 49.02 | ||
| 2 | 23 | DQ | ||
| 3 | 6 | 49.36 | ||
| 3 | 14 | 54.42 | ||
| 3 | 18 | 55.99 | ||
| 4 | 2 | 46.85 | ||
| 4 | 3 | 48.04 | ||
| 4 | 23 | DQ | ||
| 5 | 19 | 56.15 | ||
| 5 | 9 | 50.67 | ||
| 5 | 8 | 50.58 | ||
| 6 | 16 | 55.15 | ||
| 6 | 11 | 52.42 | ||
| 6 | 7 | 49.92 | ||
| 7 | 22 | 59.50 | ||
| 7 | 15 | 54.85 | ||
| 7 | 5 | 49.34 | ||
| 8 | 1 | 45.57 | ||
| 8 | 13 | 53.42 | ||
| 8 | 17 | 55.39 |