| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 20 | NS | ||
| 1 | 7 | 47.53 | ||
| 1 | 3 | 45.31 | ||
| 2 | 10 | 48.74 | ||
| 2 | 20 | DQ | ||
| 2 | 14 | 50.19 | ||
| 3 | 6 | 45.97 | ||
| 3 | 1 | 43.06 | ||
| 3 | 17 | 53.53 | ||
| 4 | 19 | 53.98 | ||
| 4 | 20 | NS | ||
| 4 | 4 | 45.56 | ||
| 5 | 2 | 44.90 | ||
| 5 | 20 | NS | ||
| 5 | 16 | 50.81 | ||
| 6 | 8 | 47.54 | ||
| 6 | 5 | 45.80 | ||
| 6 | 18 | 53.57 | ||
| 7 | 12 | 49.47 | ||
| 7 | 9 | 48.51 | ||
| 7 | 11 | 48.82 | ||
| 8 | 20 | DQ | ||
| 8 | 13 | 49.99 | ||
| 8 | 15 | 50.28 |