| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 20 | DQ | ||
| 1 | 8 | 48.67 | ||
| 2 | 14 | 54.88 | ||
| 2 | 16 | 55.80 | ||
| 3 | 6 | 45.48 | ||
| 3 | 13 | 53.12 | ||
| 3 | 11 | 49.86 | ||
| 4 | 5 | 45.04 | ||
| 4 | 3 | 43.70 | ||
| 4 | 15 | 55.16 | ||
| 5 | 4 | 44.17 | ||
| 5 | 1 | 40.42 | ||
| 5 | 17 | 56.12 | ||
| 6 | 18 | 56.53 | ||
| 6 | 2 | 42.07 | ||
| 6 | 19 | 59.04 | ||
| 7 | 7 | 46.35 | ||
| 7 | 12 | 50.19 | ||
| 7 | 9 | 49.30 | ||
| 8 | 8 | 48.67 | ||
| 8 | 20 | DQ | ||
| 8 | 10 | 49.74 |