| Final 19:45 | time | L | | 1. Nezha Bidouane |  MAR | 53.34s | 4 | | 2. Yuliya Nosova |  RUS | 54.27s | 5 | | 3. Daimi Pernia |  CUB | 54.51s | 3 | | 4. Tonja Buford-Bailey |  USA | 54.55s | 6 | | 5. Debbie-Ann Parris |  JAM | 54.68s | 1 | | 6. Ionela Tirlea |  ROM | 55.36s | 7 | | 7. Deon Hemmings | JAM | 55.83s | 8 | | 8. Sandra Glover | USA | 57.42s | 2 |
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| Semi 1 16.45h | time | L | | 1. Daimi Pernia | CUB | 53.81s | 6 | | 2. Nezha Bidouane | MAR | 53.85s | 5 | | 3. Debbie-Ann Parris | JAM | 53.88s | 4 | | 4. Sandra Glover | USA | 55.04s | 3 | | 5. Malgorzata Pskit |  POL | 55.28s | 7 | | 6. Karlene Haughton |  CAN | 55.68s | 2 | | 7. Monika Niederstatter |  ITA | 56.37s | 8 | | 8. Natalya Torshina |  KAZ | 56.45s | 1 |
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| Semi 2 16.52h | time | L | | 1. Yuliya Nosova | RUS | 54.03s | 5 | | 2. Tonja Buford-Bailey | USA | 54.15s | 6 | | 3. Deon Hemmings | JAM | 54.47s | 3 | | 4. Ionela Tirlea | ROM | 54.92s | 1 | | 5. Anna Olichwierczuk | POL | 55.64s | 7 | | 6. Brenda Taylor | USA | 56.52s | 8 | | 7. Yvonne Harrison |  PUR | 56.70s | 2 | | 8. Sinead Dudgeon |  GBR | 56.92s | 4 |
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| Heat 1 9.05h | time | L | | 1. Nezha Bidouane | MAR | 54.55s | 6 | | 2. Debbie-Ann Parris | JAM | 54.81s | 7 | | 3. Malgorzata Pskit | POL | 55.45s | 2 | | 4. Yvonne Harrison | PUR | 55.63s | 3 | | 5. Natalya Torshina | KAZ | 55.69s | 5 | | 6. Karlene Haughton | CAN | 55.94s | 4 |
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| Heat 2 9.13h | time | L | | 1. Yuliya Nosova | RUS | 54.43s | 5 | | 2. Tonja Buford-Bailey | USA | 54.99s | 3 | | 3. Ionela Tirlea | ROM | 55.41s | 7 | | 4. Anna Olichwierczuk | POL | 55.98s | 6 | | 5. MameTacko Diouf |  SEN | 56.44s | 8 | | 6. Sylvanie Morandais |  FRA | 56.85s | 4 | | 7. Keri Maddox | GBR | 57.55s | 2 |
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| Heat 3 9.21h | time | L | | 1. Sandra Glover | USA | 55.38s | 7 | | 2. Daimi Pernia | CUB | 55.40s | 2 | | 3. Monika Niederstatter | ITA | 55.83s | 6 | | 4. Natasha Danvers | GBR | 56.36s | 3 | | 5. Surita Febbraio |  RSA | 56.80s | 4 | | 6. Melanie Walker | JAM | 57.10s | 5 |
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| Heat 4 9.29h | time | L | | 1. Deon Hemmings | JAM | 55.39s | 8 | | 2. Sinead Dudgeon | GBR | 56.07s | 3 | | 3. Brenda Taylor | USA | 56.28s | 4 | | 4. Heike Meissner |  GER | 56.79s | 2 | | 5. Andrea Blackett |  BAR | 57.10s | 7 | | 6. Noraseela Khalid |  MAS | 59.12s | 5 | | -. Tetyana Tereshchuk-Antipova |  UKR | DNS | 6 |
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