| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 20 | DQ | ||
| 1 | 12 | 55.39 | ||
| 1 | 11 | 55.20 | ||
| 2 | 14 | 56.04 | ||
| 2 | 18 | 57.59 | ||
| 2 | 6 | 51.34 | ||
| 3 | 2 | 46.22 | ||
| 3 | 9 | 54.35 | ||
| 3 | 10 | 54.56 | ||
| 4 | 4 | 48.17 | ||
| 4 | 13 | 55.84 | ||
| 4 | 1 | 43.27 | ||
| 5 | 15 | 56.61 | ||
| 5 | 7 | 53.78 | ||
| 5 | 3 | 48.01 | ||
| 6 | 19 | 59.24 | ||
| 6 | 8 | 53.97 | ||
| 6 | 20 | NS | ||
| 7 | 5 | 51.08 | ||
| 7 | 20 | DQ | ||
| 7 | 16 | 56.75 | ||
| 8 | 17 | 57.39 | ||
| 8 | 20 | DQ |