| Final 19.08 22:30 | Team | time | L | Q. | | 1. Melaine Walker | JAM | 52.64s | 6 | 1. 2. | | 2. Sheena Tosta | USA | 53.70s | 5 | 15.1. | | 3. Tasha Danvers | GBR | 53.84s | 7 | 4. 3. | | 4. Anastasiya Rabchenyuk | UKR | 53.96s | 4 | 3. 6. | | 5. Anna Jesien | POL | 54.29s | 9 | 7. 4. | | 6. Ekaterina Bikert | RUS | 54.96s | 2 | 2. 5. | | 7. Zuzana Hejnova | CZE | 54.97s | 3 | 12.10. | | 8. Tiffany Ross-Williams | USA | 57.55s | 8 | 8. 9. |
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| Semi 1 18.08 20:45 | Team | time | L | Rk. | | 1. Sheena Tosta | USA | 54.07s | 2 | 1. | | 2. Tasha Danvers | GBR | 54.31s | 4 | 3. | | 3. Anna Jesien | POL | 54.36s | 6 | 4. | | 4. Ekaterina Bikert | RUS | 54.38s | 5 | 5. | | 5. Nickiesha Wilson | JAM | 54.67s | 9 | 7. | | 6. Anastasia Ott | RUS | 54.74s | 7 | 8. | | 7. Satomi Kubokura | JPN | 56.69s | 8 | 15. | | 8. Angela Morosanu | ROU | 57.67s | 3 | 16. |
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| Semi 2 20:52 | Team | time | L | Rk. | | 1. Melaine Walker | JAM | 54.20s | 5 | 2. | | 2. Anastasiya Rabchenyuk | UKR | 54.60s | 4 | 6. | | 3. Tiffany Ross-Williams | USA | 54.99s | 6 | 9. | | 4. Zuzana Hejnova | CZE | 55.17s | 8 | 10. | | 5. Aissata Soulama | BFO | 55.69s | 2 | 11. | | 6. Irina Obedina | RUS | 55.69s | 7 | 12. | | 7. Queen Quedith Harrison | USA | 55.88s | 3 | 13. | | 8. Cvetelina Kirilova | BUL | 55.97s | 9 | 14. |
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| Heat 1 17.08 20:10 | Team | time | L | Rk. | | 1. Tiffany Ross-Williams | USA | 55.51s | 3 | 8. | | 2. Irina Obedina | RUS | 55.71s | 5 | 9. | | 3. Satomi Kubokura | JPN | 55.82s | 6 | 11. | | 4. Shevon Stoddart | JAM | 56.52s | 2 | 17. | | 5. Ieva Zunda | LAT | 57.43s | 7 | 21. | | 6. Lucimar Teodoro | BRA | 57.68s | 4 | 22. |
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| Heat 2 17.08 20:18 | Team | time | L | Rk. | | 1. Tasha Danvers | GBR | 55.19s | 6 | 4. | | 2. Anastasia Ott | RUS | 55.34s | 4 | 6. | | 3. Nickiesha Wilson | JAM | 55.75s | 8 | 10. | | 4. Angela Morosanu | ROU | 56.07s | 7 | 14. | | 5. Sheena Tosta | USA | 56.12s | 2 | 15. | | 6. Nikolina Horvat | CRO | 56.65s | 5 | 18. | | 7. Michelle Carey | IRE | 57.99s | 3 | 25. |
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| Heat 3 17.08 20:26 | Team | time | L | Rk. | | 1. Melaine Walker | JAM | 54.46s | 8 | 1. | | 2. Anastasiya Rabchenyuk | UKR | 55.18s | 2 | 3. | | 3. Cvetelina Kirilova | BUL | 55.22s | 5 | 5. | | 4. Queen Quedith Harrison | USA | 55.96s | 3 | 13. | | 5. Aissata Soulama | BFO | 56.37s | 4 | 16. | | 6. Carole Madeleine Kaboud Mebam | CMR | 57.81s | 6 | 24. | | 7. Galina Pedan | KGZ | 1:00.31 | 7 | 27. |
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| Heat 4 17.08 20:34 | Team | time | L | Rk. | | 1. Ekaterina Bikert | RUS | 55.15s | 7 | 2. | | 2. Anna Jesien | POL | 55.35s | 8 | 7. | | 3. Zuzana Hejnova | CZE | 55.91s | 6 | 12. | | 4. Tatyana Azarova | KAZ | 56.88s | 5 | 19. | | 5. Muna Gabir | SUD | 57.16s | 2 | 20. | | 6. Josanne Lucas | TRT | 57.76s | 3 | 23. | | 7. Laia Forcadell | ESP | 58.64s | 4 | 26. |
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