| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 17 | 49.66 | ||
| 1 | 23 | NS | ||
| 1 | 8 | 41.82 | ||
| 2 | 15 | 48.97 | ||
| 2 | 7 | 41.44 | ||
| 2 | 9 | 42.08 | ||
| 3 | 18 | 50.17 | ||
| 3 | 2 | 37.51 | ||
| 3 | 13 | 45.69 | ||
| 4 | 19 | 50.65 | ||
| 4 | 1 | 37.09 | ||
| 4 | 14 | 47.14 | ||
| 5 | 10 | 43.00 | ||
| 5 | 20 | 51.28 | ||
| 5 | 6 | 40.64 | ||
| 6 | 5 | 40.31 | ||
| 6 | 11 | 43.70 | ||
| 6 | 22 | 55.97 | ||
| 7 | 23 | DQ | ||
| 7 | 12 | 43.96 | ||
| 7 | 4 | 38.83 | ||
| 8 | 16 | 49.24 | ||
| 8 | 21 | 54.97 | ||
| 8 | 3 | 38.42 |