| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 20 | 54.89 | ||
| 1 | 22 | 55.74 | ||
| 1 | 10 | 49.90 | ||
| 2 | 14 | 52.09 | ||
| 2 | 16 | 52.90 | ||
| 2 | 11 | 51.20 | ||
| 3 | 3 | 47.51 | ||
| 3 | 12 | 51.86 | ||
| 3 | 18 | 53.81 | ||
| 4 | 4 | 48.02 | ||
| 4 | 6 | 48.90 | ||
| 4 | 1 | 44.86 | ||
| 5 | 5 | 48.51 | ||
| 5 | 2 | 46.12 | ||
| 5 | 9 | 49.43 | ||
| 6 | 8 | 49.31 | ||
| 6 | 15 | 52.21 | ||
| 6 | 7 | 48.98 | ||
| 7 | 17 | 53.78 | ||
| 7 | 13 | 52.06 | ||
| 7 | 23 | NS | ||
| 8 | 19 | 54.45 | ||
| 8 | 21 | 55.17 | ||
| 8 | 23 | DQ |