| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 27 | NS | ||
| 1 | 21 | 50.67 | ||
| 1 | 17 | 49.20 | ||
| 2 | 1 | 39.78 | ||
| 2 | 15 | 48.82 | ||
| 2 | 19 | 50.10 | ||
| 3 | 23 | 51.52 | ||
| 3 | 9 | 42.09 | ||
| 3 | 27 | DQ | ||
| 4 | 2 | 40.11 | ||
| 4 | 10 | 44.78 | ||
| 4 | 24 | 54.09 | ||
| 5 | 5 | 40.47 | ||
| 5 | 18 | 49.79 | ||
| 5 | 22 | 50.77 | ||
| 6 | 4 | 40.25 | ||
| 6 | 12 | 47.12 | ||
| 6 | 13 | 47.13 | ||
| 7 | 14 | 47.71 | ||
| 7 | 3 | 40.20 | ||
| 7 | 16 | 48.99 | ||
| 8 | 11 | 46.42 | ||
| 8 | 8 | 41.98 | ||
| 9 | 6 | 40.93 | ||
| 9 | 26 | 54.26 | ||
| 9 | 27 | NS | ||
| 10 | 7 | 40.98 | ||
| 10 | 20 | 50.23 | ||
| 10 | 25 | 54.23 |