| Final 10.08 10:48 | Team | time | L | Rk. | | 1. Stephanie Rice | AUS | 4:29.45s | 6 | 4. | | 2. Kirsty Coventry | ZIM | 4:29.89s | 1 | 7. | | 3. Katie Hoff | USA | 4:31.71s | 5 | 2. | | 4. Elizabeth Beisel | USA | 4:34.24s | 4 | 1. | | 5. Alessia Filippi | ITA | 4:34.34s | 3 | 3. | | 6. Hannah Miley | GBR | 4:39.44s | 8 | 8. | | 7. Yana Martynova | RUS | 4:40.04s | 2 | 5. | | 8. Xuanxu Li | CHN | 4:42.13s | 7 | 6. |
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| Round | H | Athl. | date |
| | Heats | 5 | 38 | 09.08 |
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| Heat 5 09.08 20:16 | Team | time | L | Rk. | | 1. Katie Hoff | USA | 4:34.63 | 4 | 2. | | 2. Hannah Miley | GBR | 4:36.56 | 5 | 8. | | 3. Katinka Hosszu | HUN | 4:37.55 | 3 | 12. | | 4. Zsuzsanna Jakabos | HUN | 4:37.86 | 2 | 13. | | 5. Mireia Belmonte | ESP | 4:37.91 | 7 | 14. | | 6. Anja Klinar | SLO | 4:38.90 | 8 | 16. | | 7. Jessica Pengelly | RSA | 4:41.04 | 1 | 21. | | 8. Joanne Andraca | FRA | 4:43.88 | 6 | 23. |
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| Heat 4 09.08 20:08 | Team | time | L | Rk. | | 1. Stephanie Rice | AUS | 4:35.11 | 4 | 3. | | 2. Xuanxu Li | CHN | 4:36.35 | 3 | 6. | | 3. Kirsty Coventry | ZIM | 4:36.43 | 5 | 7. | | 4. Katarzyna Baranowska | POL | 4:36.95 | 7 | 9. | | 5. Katheryn Meaklim | RSA | 4:37.11 | 1 | 10. | | 6. Camille Muffat | FRA | 4:40.29 | 6 | 19. | | 7. Saori Haruguchi | JPN | 4:45.22 | 2 | 27. | | 8. Alexa Komarnycky | CAN | 4:46.98 | 8 | 29. |
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| Heat 3 09.08 20:00 | Team | time | L | Rk. | | 1. Elizabeth Beisel | USA | 4:34.55 | 4 | 1. | | 2. Alessia Filippi | ITA | 4:35.11 | 5 | 3. | | 3. Yana Martynova | RUS | 4:36.25 | 3 | 5. | | 4. Maiko Fujino | JPN | 4:37.35 | 7 | 11. | | 5. Keri-Anne Payne | GBR | 4:38.69 | 6 | 15. | | 6. Tanya Hunks | CAN | 4:40.63 | 8 | 20. | | 7. Samantha Hamill | AUS | 4:41.89 | 1 | 22. | | 8. Helen Norfolk | NZL | 4:44.22 | 2 | 24. |
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| Heat 2 09.08 19:54 | Team | time | L | Rk. | | 1. Joanna Maranhao | BRA | 4:40.18 | 3 | 17. | | 2. Sara Nordenstam | NOR | 4:40.28 | 7 | 18. | | 3. Jing Liu | CHN | 4:44.96 | 5 | 25. | | 4. Joerdis Steinegger | AUT | 4:45.15 | 1 | 26. | | 5. Susana Escobar | MEX | 4:47.32 | 8 | 30. | | 6. Svetlana Karpeeva | RUS | 4:50.22 | 6 | 31. | | 7. Katharina Schiller | GER | 4:51.52 | 2 | 33. | | 8. Georgina Bardach | ARG | 5:00.87 | 4 | 36. |
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| Heat 1 09.08 19:47 | Team | time | L | Rk. | | 1. Yoosun Nam | KOR | 4:46.74 | 3 | 28. | | 2. Ting Wen Quah | SIN | 4:51.25 | 6 | 32. | | 3. Yih Wey Lew | MAS | 4:55.83 | 4 | 34. | | 4. Anna-Liisa Pold | EST | 4:58.21 | 5 | 35. | | 5. Nimitta Thaveesupsoonthorn | THA | 5:02.18 | 7 | 37. | | -. Maroua Mathlouthi | TUN | DNS | 2 | |
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