| 1 | Ana Guevara | MEX | |
48,89 | AR |
| 2 | Lorraine Fenton | JAM | |
49,43 | |
| 3 | Amy Mbacke Thiam | SEN | |
49,95 | |
| 4 | Natalya Nazarova | RUS | 49,98 | ||
| 5 | Tonique Williams | BAH | 50,38 | ||
| 6 | Olesya Zykina | RUS | 50,59 | ||
| 7 | Lee McConnell | GBR | 51,07 | ||
| 8 | Svetlana Pospelova | RUS | 51,30 |