| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 20 | 59.15 | ||
| 1 | 16 | 52.72 | ||
| 1 | 11 | 49.76 | ||
| 2 | 7 | 46.93 | ||
| 2 | 13 | 50.13 | ||
| 2 | 14 | 50.80 | ||
| 3 | 2 | 42.95 | ||
| 3 | 15 | 51.43 | ||
| 3 | 18 | 53.18 | ||
| 4 | 19 | 55.61 | ||
| 4 | 1 | 42.10 | ||
| 4 | 3 | 43.09 | ||
| 5 | 9 | 48.69 | ||
| 5 | 12 | 50.03 | ||
| 5 | 4 | 44.39 | ||
| 6 | 8 | 46.97 | ||
| 6 | 5 | 44.57 | ||
| 6 | 6 | 46.75 | ||
| 7 | 21 | DQ | ||
| 7 | 10 | 48.99 | ||
| 7 | 21 | DQ | ||
| 8 | 17 | 52.95 | ||
| 8 | 21 | NS |