| Final 20:23 | | time | | gap | Butter | Back | Breast | pts | L | ag | | 1. Freya Constance Colbert |  Great Britain | 4:37.14 | | | 1:03.936 | 2:13.822 | 3:34.104 | 882 | 3 | 19 | | 2. Anastasia Gorbenko |  Israel | 4:37.36 | | +0.22s | 1:01.431 | 2:14.063 | 3:33.092 | 880 | 2 | 20 | | 3. Sara Franceschi |  Italy | 4:37.86 | | +0.72s | 1:03.075 | 2:14.385 | 3:32.951 | 876 | 8 | 25 | | 4. Anja Crevar |  Serbia | 4:38.93 | | +1.79s | 1:02.032 | 2:14.164 | 3:33.993 | 866 | 5 | 23 | | 5. Boglarka Kapas |  Hungary | 4:39.78 | | +2.64s | 1:02.443 | 2:13.791 | 3:36.725 | 858 | 1 | 30 | | 6. Cyrielle Duhamel |  France | 4:41.95 | | +4.81s | 1:02.724 | 2:15.926 | 3:36.776 | 838 | 6 | 24 | | 7. Tessa Cieplucha |  Canada | 4:43.02 | | +5.88s | 1:04.878 | 2:17.158 | 3:37.347 | 829 | 4 | 25 | | 8. Ichika Kajimoto |  Japan | 4:43.61 | | +6.47s | 1:04.237 | 2:16.957 | 3:41.878 | 823 | 7 | 19 |
| World Record: Summer McIntosh, Canada 4:23.65 Vitoria, Canada 11th June 2025 2024 | | Championship Record: Summer McIntosh, Canada 4:27.11 Fukuoka, Japan 30th July 2023 | | Olympic Qualification Time (14th Tokyo 2020): 4:38.53. Olympic Consideration Time (+5% OQT): 4:39.92 |
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Heats - Sunday, 18th February 09:50 | | Best 8 times advanced to Final. No OQt. Mo OCT. |
| Heat 3 10:06 | | time | | gap | Butter | Back | Breast | pts | L | ag | | 3. Freya Constance Colbert | Great Britain | 4:42.33 | | +1.53s | 1:03.67 | 2:15.77 | 3:37.17 | 835 | 4 | 19 | | 5. Anastasia Gorbenko | Israel | 4:42.79 | | +1.99s | 1:01.48 | 2:14.98 | 3:36.03 | 831 | 6 | 20 | | 9. Lilla Bognar |  United States | 4:44.22 | | +3.42s | 1:05.03 | 2:15.07 | 3:37.87 | 818 | 2 | 17 | | 10.Ella Jansen | Canada | 4:44.93 | | +4.13s | 1:02.59 | 2:16.13 | 3:39.22 | 812 | 5 | 18 | | 11.Kristen Elena Romano |  Puerto Rico | 4:45.78 | | +4.98s | 1:03.49 | 2:16.59 | 3:39.32 | 805 | 0 | 24 | | 13.Kayla Han | United States | 4:47.12 | | +6.32s | 1:04.32 | 2:17.41 | 3:41.94 | 793 | 1 | 15 | | 14.Agostina Hein |  Argentina | 4:47.45 | | +6.65s | 1:03.67 | 2:18.47 | 3:44.17 | 791 | 7 | 15 | | 15.Gabrielle Roncatto |  Brazil | 4:48.44 | | +7.64s | 1:04.45 | 2:19.13 | 3:43.37 | 783 | 8 | 25 | | 16.Zuzanna Famulok |  Poland | 4:48.53 | | +7.73s | 1:03.89 | 2:19.03 | 3:42.45 | 782 | 9 | 20 | | 19.Kiah Melverton |  Australia | 4:53.82 | | +13.02s | 1:04.78 | 2:23.82 | 3:47.36 | 740 | 3 | 27 |
| Heat 2 10:00 | | time | | gap | Butter | Back | Breast | pts | L | ag | | 1. Tessa Cieplucha | Canada | 4:40.80 | | | 1:04.92 | 2:16.86 | 3:36.28 | 848 | 7 | 25 | | 2. Anja Crevar | Serbia | 4:41.11 | | +0.31s | 1:02.69 | 2:14.69 | 3:35.22 | 846 | 2 | 23 | | 4. Cyrielle Duhamel | France | 4:42.68 | | +1.88s | 1:03.26 | 2:16.32 | 3:37.07 | 831 | 5 | 24 | | 6. Ichika Kajimoto | Japan | 4:42.85 | | +2.05s | 1:04.40 | 2:17.49 | 3:41.49 | 830 | 6 | 19 | | 7. Boglarka Kapas | Hungary | 4:43.53 | | +2.73s | 1:04.05 | 2:16.68 | 3:40.20 | 824 | 3 | 30 | | 8. Sara Franceschi | Italy | 4:43.61 | | +2.81s | 1:04.56 | 2:17.74 | 3:38.63 | 823 | 4 | 25 | | 12.Yihan Mao |  China | 4:46.88 | | +6.08s | 1:03.68 | 2:16.85 | 3:42.01 | 795 | 8 | 14 | | 17.Kamonchanok Kwanmuang |  Thailand | 4:49.11 | | +8.31s | 1:05.17 | 2:21.78 | 3:44.21 | 777 | 1 | 18 | | 18.Xiandi Chua |  Philippines | 4:51.01 | | +10.21s | 1:06.26 | 2:19.64 | 3:44.45 | 762 | 0 | 22 |
| Heat 1 09:53 | | time | | gap | Butter | Back | Breast | pts | L | ag | | 20.Applejean Gwinn |  Chinese Taipei | 5:00.08 | | +19.28s | 1:04.58 | 2:24.03 | 3:52.59 | 695 | 4 | 17 | | 21.Karin Belbeisi |  Jordan | 5:20.71 | | +39.91s | 1:11.27 | 2:34.36 | 4:10.37 | 569 | 3 | 15 | | -. Nikoleta Trnikova |  Slovakia | DNS | | | - | | | | 5 | 21 |
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