Heat 1 21:00h | time | L | 1. Sanya Richards | USA | 50.05s | 6 | 2. Amy Mbacke Thiam | SEN | 50.83s | 4 | 3. Natalya Antyukh | RUS | 50.99s | 3 | 4. Nawal El Jack | SUD | 51.85s | 2 | 5. Tiandra Ponteen | SKN | 51.88s | 5 | 6. Shericka Williams | JAM | 52.44s | 7 | 7. Donna Fraser | GBR | 52.48s | 1 | 8. Anna Kozak | BLR | 52.73s | 8 |
|
Heat 2 21:08h | time | L | 1. Svetlana Pospelova | RUS | 50.34s | 5 | 2. Deedee Trotter | USA | 50.73s | 6 | 3. Christine Amertil | BAH | 51.03s | 3 | 4. Christine Ohuruogu | GBR | 51.43s | 4 | 5. Lorraine Fenton | JAM | 51.48s | 1 | 6. Kaltouma Nadjina | CHA | 52.07s | 2 | 7. Bintou Fall_fatou | SEN | 52.35s | 7 | 8. Anna Guzowska | POL | 52.45s | 8 |
|
Heat 3 21:16h | time | L | 1. Tonique Williams-Darling | BAH | 49.69s | 4 | 2. Ana Guevara | MEX | 50.33s | 3 | 3. Olesya Zykina | RUS | 50.73s | 5 | 4. Monique Henderson | USA | 50.73s | 6 | 5. Ilona Usovich | BLR | 50.96s | 2 | 6. Lee Mcconnell | GBR | 51.15s | 7 | 7. Lucimar Teodoro | BRA | 51.98s | 1 | 8. Karen Shinkins | IRL | 52.17s | 8 |
|