| Final Saturday 06.08 | time | L | React. | | 1. Katinka Hosszú |  Hungary | 4:26.36 WR | 4 | 0.71 | | 2. Maya DiRado |  United States | 4:31.15 | 3 | 0.79 | | 3. Mireia Belmonte |  Spain | 4:32.39 | 5 | 0.77 | | 4. Hannah Miley |  Great Britain | 4:32.54 | 6 | 0.70 | | 5. Emily Overholt |  Canada | 4:34.70 | 8 | 0.69 | | 6. Elizabeth Beisel | United States | 4:34.98 | 7 | 0.66 | | 7. Aimee Willmott | Great Britain | 4:35.04 | 2 | 0.70 | | 8. Sakiko Shimizu |  Japan | 4:38.06 | 1 | 0.73 |
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Heats - Saturday 06.08 Afternoon |
| Ranking | time | L | H | | 1. Katinka Hosszú | Hungary | 4:28.58 ER | 4 | 5. | | 2. Mireia Belmonte | Spain | 4:32.75 | 3 | 5. | | 3. Maya DiRado | United States | 4:33.50 | 4 | 4. | | 4. Hannah Miley | Great Britain | 4:33.74 | 5 | 5. | | 5. Aimee Willmott | Great Britain | 4:34.08 | 3 | 4. | | 6. Elizabeth Beisel | United States | 4:34.38 | 2 | 5. | | 7. Sakiko Shimizu | Japan | 4:34.66 NR | 7 | 5. | | 8. Emily Overholt | Canada | 4:36.54 | 5 | 4. | | eliminated | | 9. Nguyễn Thị Ánh Viên |  Vietnam | 4:36.85 | 2 | 3. | | 10.Miho Takahashi | Japan | 4:37.33 | 6 | 4. | | 10.Keryn McMaster |  Australia | 4:37.33 | 8 | 4. | | 12.Sydney Pickrem | Canada | 4:38.06 | 4 | 3. | | 13.Zsuzsanna Jakabos | Hungary | 4:38.52 | 8 | 5. | | 14.Barbora Závadová |  Czechia | 4:38.53 | 2 | 4. | | 15.Joanna Maranhão |  Brazil | 4:38.88 | 5 | 3. | | 16.Blair Evans | Australia | 4:38.91 | 6 | 5. | | 17.Matea Samardžić |  Croatia | 4:39.41 | 7 | 2. | | 18.Viktoriya Zeynep Güneş |  Turkey | 4:41.79 | 8 | 3. | | 19.María Vilas | Spain | 4:42.52 | 7 | 3. | | 20.Anja Crevar |  Serbia | 4:43.19 | 2 | 2. | | 21.Franziska Hentke |  Germany | 4:43.32 | 6 | 3. | | 22.Lara Grangeon |  France | 4:43.98 | 1 | 5. | | 23.Fantine Lesaffre | France | 4:44.47 | 1 | 3. | | 24.Martina van Berkel |  Switzerland | 4:45.12 | 5 | 1. | | 25.Tanja Kylliäinen |  Finland | 4:45.33 NR | 3 | 1. | | 26.Luisa Trombetti |  Italy | 4:45.52 | 3 | 3. | | 27.Ye Shiwen |  China | 4:45.86 | 7 | 4. | | 28.Victoria Kaminskaya |  Portugal | 4:46.03 | 3 | 2. | | 29.Steinegger Jördis |  Austria | 4:47.84 | 4 | 1. | | 30.Sara$FRA Franceschi | Italy | 4:48.48 | 4 | 2. | | 31.Virginia Bardach |  Argentina | 4:49.69 | 6 | 2. | | 32.Zhou Min | China | 4:50.38 | 1 | 4. | | 33.Ranohon Amanova |  Uzbekistan | 4:52.15 | 5 | 2. |
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| Final 06.08 Saturday Night. | | Heats 06.08 Saturday 06.08 Afternoon |
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| Olympic Qualifyng Time (OQT) 4:43.46 - NOC can enter up to 2 swimmers with OQT. | | Olympic Selection Time (OST) 4:53.38, invitational - A swwimer meeting the "invitation" standard was eligible for entry. But this entry was allotted/filled by ranking. |
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| Olympic Qualifyng Time by NOC - 30 Swimmers - additional 4 Swimmers. | | Olympic Qualifying Time – 4:43.46 | | 2 Quotas - 10 NOC | | 2 |  Australia | Blair Evans | Keryn McMaster | | 2 |  Canada | Emily Overholt | Sydney Pickrem | | 2 |  China | Ye Shiwen | Zhou Min | | 2 |  France | Lara Grangeon | Fantine Lesaffre | | 2 |  Great_Britain | Hannah Miley | Aimee Willmott | | 2 |  Hungary | Katinka Hosszú | Zsuzsanna Jakabos | | 2 |  Italy | Sara Franceschi | Luisa Trombetti | | 2 |  Japan | Sakiko Shimizu | Miho Takahashi | | 2 |  Spain | Mireia Belmonte | María Vilas | | 2 |  United_States | Elizabeth Beisel | Maya DiRado | | 1 Quota - 10 NOC | | 1 |  Argentina | Virginia Bardach | | 1 |  Brazil | Joanna Melo | | 1 |  Czechia | Barbora Závadová | | 1 |  Germany | Franziska Hentke | | 1 |  Portugal | Victoria Kaminskaya | | 1 |  Serbia | Anja Crevar | | 1 |  Slovenia | Anja Klinar | | 1 |  Turkey | Zeynep Güneş | | 1 |  Uzbekistan | Ranohon Amanova | | 1 |  Vietnam | Nguyễn Thị Ánh Viên | | Olympic Selection Time – 4:53.68 - 4 NOC | | 1 |  Austria | Steinegger Jördis | | 1 |  Croatia | Matea Samardžić | [a] | | 1 |  Finland | Tanja Kylliäinen | [a] | | 1 |  Switzerland | Martina van Berkel | [a] | | Universalitiy Places - 0 NOC | | 34 | Total |
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