| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 19 | 52.51 | ||
| 1 | 18 | 49.80 | ||
| 1 | 8 | 43.45 | ||
| 2 | 15 | 47.83 | ||
| 2 | 23 | DQ | ||
| 2 | 14 | 46.28 | ||
| 3 | 1 | 39.17 | ||
| 3 | 5 | 42.17 | ||
| 3 | 10 | 44.70 | ||
| 4 | 12 | 45.14 | ||
| 4 | 9 | 44.55 | ||
| 4 | 2 | 39.40 | ||
| 5 | 6 | 43.06 | ||
| 5 | 17 | 49.71 | ||
| 5 | 3 | 40.38 | ||
| 6 | 16 | 49.43 | ||
| 6 | 4 | 41.87 | ||
| 6 | 13 | 45.69 | ||
| 7 | 20 | 53.01 | ||
| 7 | 23 | DQ | ||
| 7 | 11 | 44.76 | ||
| 8 | 7 | 43.27 | ||
| 8 | 21 | 55.31 | ||
| 8 | 22 | 58.45 |