| Final 02.08 | time | L | -time | Heat | | 1. | China | 3:52.19 | 4 | WR | Final | | Jing Zhao 58.98s, Huijia Chen 1:04.12, Liuyang Jiao 56.28s, Zhesi LI 52.81s | | 2. | Australia | 3:52.58 | 1 | 0.39s | Final | | Emily Seebohm 59.40s, Sarah Katsoulis 1:04.65, Jessicah Schipper 56.19s, Lisbeth Trickett 52.34s | | 3. | Germany | 3:55.79 | 3 | 3.60s | Final | | Daniela Samulski 59.85s, Sarah Poewe 1:06.81, Annika Mehlhorn 57.14s, Britta Steffen 51.99s | | 4. | Great Britain | 3:57.03 | 2 | 4.84s | Final | | Gemma Spofforth 58.96s, Lowri Tynan 1:07.80, Ellen Gandy 57.39s, Fran Halsall 52.88s | | 5. | Netherlands | 3:57.31 | 6 | 5.12s | Final | | Frederike Heemskerk 1:01.28, Lia Dekker 1:06.51s, Inge Dekker 56.82s, Ranomi Kromowidjojo 52.70s | | 6. | Canada | 3:57.87 | 7 | 5.68s | Final | | Julia Wilkinson 1:00.37, Annamay Pierse 1:06.48, Audrey Lacroix 57.51s, Victoria Poon 53.51s | | 7. | Japan | 3:57.93 | 5 | 5.74s | Final | | Shiho Sakai 59.30s, Nanaka Tamura 1:07.24, Yuka Kato 57.32s, Haruka Ueda 54.07s | | 8. | Brazil | 3:58.83 | 8 | 6.64s | Final | | Fabiola Molina 1:00.07, Carolina Mussi 1:08.22, Gabriella Silva 56.65s, Tatiana Lemos-Barbosa 53.89s |
| Heats 01.08 10:11 | time | L | -time | Heat | | 1. | China | 3:56.14 | 4 | | Heat 2. | | Jing Zhao 1:00.24, Huijia Chen 1:05.04, Liuyang Jiao 56.92s, Zhesi LI 53.94s | | 2. | Japan | 3:57.44 | 5 | 1.30s | Heat 2. | | Shiho Sakai 59.47s, Nanaka Tamura 1:06.55, Yuka Kato 57.45s, Haruka Ueda 53.97s | | 3. | Germany | 3:57.75 | 3 | 1.61s | Heat 2. | | Daniela Samulski 1:00.16, Sarah Poewe 1:06.74, Annika Mehlhorn 57.36s, Daniela Schreiber 53.49s | | 4. | Netherlands | 3:58.05 | 6 | 1.91s | Heat 2. | | Frederike Heemskerk 1:01.28, Lia Dekker 1:07.41, Inge Dekker 56.95s, Ranomi Kromowidjojo 52.41s | | 5. | Great Britain | 3:58.18 | 5 | 2.04s | Heat 4. | | Gemma Spofforth 59.58s, Lowri Tynan 1:07.51, Ellen Gandy 57.80s, Fran Halsall 53.29s | | 6. | Canada | 3:58.23 | 3 | 2.09s | Heat 4. | | Julia Wilkinson 1:00.69, Annamay Pierse 1:06.10, Audrey Lacroix 57.70s, Genevieve Saumur 53.74s | | 7. | Australia | 3:58.36 | 4 | 2.22s | Heat 4. | | Emily Seebohm 59.65s, Sally Foster 1:07.32, Stephanie Rice 57.29s, Shayne Reese 54.10s | | 8. | Brazil | 3:58.49 | 6 | 2.35s | Heat 4. | | Fabiola Molina 1:00.08, Carolina Mussi 1:08.31, Gabriella Silva 56.25s, Tatiana Lemosbarbosa 53.85s | | 9. | Denmark | 3:58.93 | 2 | 2.79s | Heat 3. | | Pernille Jessing Larsen 1:01.63, Rikke Moller-Pedersen 1:06.59, Micha K Ostergaard Jensen 57.82s, Jeanette Ottesen 52.89s | | 10. | United States | 3:59.01 | 4 | 2.87s | Heat 3. | | Elizabeth Pelton 1:00.78, Kasey Carlson 1:06.79, Christine Magnuson 57.29s, Julia Smit 54.15s | | 11. | Sweden | 4:01.04 | 3 | 4.90s | Heat 3. | | Sarah Sjostrom 1:00.74, Joline Hostman 1:08.27, Gabriella Fagundez 58.44s, Josefin Lillhage 53.59s | | 12. | France | 4:01.05 | 6 | 4.91s | Heat 3. | | Esther Baron 1:01.53, Fanny Babou 1:08.44, Aurore Mongel 57.69s, Malia Metella 53.39s | | 13. | Russia | 4:01.09 | 5 | 4.95s | Heat 3. | | Mariya Gromova 1:00.33, Valentina Artemyeva 1:08.30, Irina Bespalova 57.64, Olga Klyuchnikova 54.82s | | 14. | Hungary | 4:03.63 | 7 | 7.49s | Heat 4. | | Eszter Dara 1:01.07, Reka Pecz 1:09.53, Katinka Hosszu 59.34s, Evelyn Verraszto 53.69s | | 15. | Czechia | 4:06.43 | 4 | 10.29s | Heat 1. | | Simona Baumrtova 1:01.56, Petra Chocova 1:08.30, Lenka Jarosova 1:01.42, Petra Klosova 55.15s | | 16. | Ukraine | 4:07.37 | 7 | 11.23s | Heat 1. | | Daryna Zevina 1:02.34, Anna Khlistunova 1:10.35, Kateryna Zubkova 59.70s, Dar'ya Stepanyuk 54.98s | | 17. | Poland | 4:07.81 | 2 | 11.67s | Heat 2. | | Alicja Tchorz 1:01.53, Ewa Scieszko 1:09.67, Mirela Olczak 1:01.17, Katarzyna Wilk 55.44s | | 18. | Norway | 4:08.24 | 2 | 12.10s | Heat 1. | | Katharina Stiberg 1:04.37, Sara Nordenstam 1:10.54, Ingvild Snildal 57.02s, Henriette Brekke 56.31s | | 19. | Belgium | 4:09.18 | 9 | 13.04s | Heat 2. | | Elodie Vanhamme 1:03.90, Elise Matthysen 1:09.14, Kimberly Buys 59.85, Jolien Sysmans 56.29s | | 20. | Israel | 4:09.49 | 1 | 13.35s | Heat 2. | | Anna Volchkov 1:02.75, Yuliya Banach 1:09.72, Amit Ivry 58.33s, Kristina Tchernychev 58.69s | | 21. | Belarus | 4:09.72 | 1 | 13.58s | Heat 4. | | Aleksandra Kovaleva 1:03.47, Inna Kapishina 1:08.11, Iryna Niafedava 1:01.51, Yulia Khitraya 56.63s | | 22. | Lithuania | 4:12.30 | 8 | 16.16s | Heat 4. | | Rugile Mileisyte 1:02.72, Raminta Dvariskyte 1:09.97, Aiste Dobrovolskaite 1:02.05, Grite Apanaviciute 57.56s | | 23. | Singapore | 4:12.35 | 7 | 16.21s | Heat 3. | | Shana Jia Yi Lim 1:03.25, Ru'En Roanne Ho 1:11.90, Lynette Lim 1:01.97, Ting Wen Quah 55.23s | | 24. | Ireland | 4:12.67 | 1 | 16.53s | Heat 3. | | Aisling Cooney 1:03.18, Fiona Doyle 1:10.53, Grainne Murphy 1:02.41, Clare Dawson 56.55s | | 25. | Bahamas | 4:15.59 | 8 | 19.45s | Heat 2. | | Alana Dillette 1:03.40, Alicia Lightbourne 1:12.28, A. Vanderpool-Wallace 1:00.45, Teisha Lightbourne 59.46s | | 26. | Taiwan | 4:18.88 | 8 | 22.74s | Heat 3. | | Ting Chen 1:04.63, Chuan I-Chen 1:14.08, Sheng-Yo Ting 1:03.59, Chin-Kuei Yang 56.58s | | 27. | Zimbabwe | 4:24.35 | 1 | 28.21s | Heat 1. | | Kirsten Lapham 1:07.06, Maxine Heard 1:13.30, Moira Fraser 1:06.25, Nicole Horn 57.74s | | 28. | Macau | 4:31.67 | 0 | 35.53s | Heat 4. | | Man Wai Fong 1:08.98, On Kei Lei 1:14.66, Cheok Mei Ma 1:06.50, Chi Yan Tan 1:01.53 | | 29. | Kenya | 4:34.66 | 5 | 38.52s | Heat 1. | | Rachita Shah 1:10.24, Achieng Ajulu-Bushell 1:11.94, Pina Ercolano 1:10.79, Sylvia Brunlehner 1:01.69 | | 30. | Malta | 4:34.92 | 3 | 38.78s | Heat 1. | | Nicol Cremona 1:08.65, Melinda Sue Micallef 1:19.84, Davina Mangion 1:06.08, Talisa Pace 1:00.35 | | 31. | Senegal | 4:46.20 | 0 | 50.06s | Heat 2. | | Khadidiatou Dieng 1:15.57, Ouleye Diallo 1:23.00, Binta Zahra Diop 1:02.31, Mareme Faye 1:05.32 | | 32. | Mozambique | 4:48.62 | 6 | 52.48s | Heat 1. | | Jessika Cossa 1:13.90, Monica Bernardo 1:19.47, Gessica Stagno 1:10.83, Faina Salate 1:04.42 | | 33. | India | 4:53.02 | 0 | 56.88s | Heat 3. | | Fariha Zaman 1:11.89, Murugaperumal Venpa 1:28.78, Pooja Raghava Alva 1:08.24, Chittaranjan Shubha 1:04.11 | | 34. | Albania | 5:05.95 | 9 | 1:09.81 | Heat 4. | | Reni Jani 1:21.63, Tea Pikuli 1:27.11, Sara Abdullahu 1:11.50, Rovena Marku 1:05.71 | | 35. | Pakistan | 5:33.03 | 9 | 1:36.89 | Heat 3. | | Rida Mitha 1:21.63, Aqsa Tariq 1:34.54, Sakina Ghulam 1:23.81, Mahnoor Maqsood 1:13.05 | | -. | Italy | DQ | 4 | | Heat 2. | | Elena Gemo 1:01.00, Chiara Boggiatto 1:07.08, Ilaria Bianchi 58.77s, Laura Letrari Start -0.11s | | -. | Venezuela | DNS | 7 | | Heat 2. |
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