| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 9 | 48.12 | ||
| 1 | 18 | 51.67 | ||
| 1 | 22 | DQ | ||
| 2 | 20 | 58.59 | ||
| 2 | 8 | 47.72 | ||
| 2 | 10 | 48.15 | ||
| 3 | 17 | 51.24 | ||
| 3 | 13 | 50.40 | ||
| 3 | 11 | 49.03 | ||
| 4 | 19 | 55.63 | ||
| 4 | 15 | 50.77 | ||
| 4 | 1 | 42.74 | ||
| 5 | 12 | 49.78 | ||
| 5 | 16 | 50.86 | ||
| 5 | 14 | 50.63 | ||
| 6 | 22 | DQ | ||
| 6 | 2 | 43.80 | ||
| 6 | 3 | 43.91 | ||
| 7 | 7 | 46.89 | ||
| 7 | 4 | 45.01 | ||
| 7 | 21 | 1:19.59 | ||
| 8 | 5 | 45.18 | ||
| 8 | 6 | 46.17 | ||
| 8 | 22 | DQ |