| Final 18:37 |   | time | gap | L | Ag | pts | 100m | 150m | Ol |  | 1. Erika Fairweather |   New Zealand | 3:59.44 |   | 5 | 20 | 949 | 1:58.41 | 2:59.32 | QT |  | 2. Bingjie Li |   China | 4:01.62 | +2.18s | 4 | 21 | 924 | 2:00.06 | 3:01.33 | QT |  | 3. Isabel Gose |   Germany | 4:02.39 | +2.95s | 3 | 21 | 915 | 2:00.21 | 3:02.10 | QT |  | 4. Maria Fernanda De Oliveira |   Brazil | 4:02.86 | +3.42s | 6 | 21 | 910 | 2:00.36 | 3:02.54 | QT |  | 5. Gabrielle Roncatto |   Brazil | 4:04.18 | +4.74s | 7 | 25 | 895 | 2:00.46 | 3:02.97 | QT |  | 6. Peiqi Yang |   China | 4:05.73 | +6.29s | 1 | 16 | 878 | 2:01.61 | 3:03.86 | QT |  | 7. Eve Thomas |   New Zealand | 4:05.87 | +6.43s | 2 | 23 | 877 | 2:01.82 | 3:04.32 | QT |  | 8. Agostina Hein |   Argentina | 4:10.33 | +10.89s | 8 | 15 | 831 | 2:03.16 | 3:07.07 |   |   
| World and Championship Record:  |  | Olympic Qualification Time (OQT Tokyo 2020): 4:07.90. Olympic Consideration Time (+0.5% OQT): 4:09.14 |   
|
 Heats - Sunday, 11th February 09:46 |  | Best 8 times advanced to Final. OQT - First 7. OCT - First 8. |   
    | Heat 4 10:04 |   | time | gap | L | Ag | pts | Rk | 50m | 100m | 150m | Ol |  | 1. Bingjie Li |   China | 4:04.65 |   | 5 | 21 | 890 | 1. | 59.04s | 2:01.32 | 3:03.86 | QT |  | 2. Erika Fairweather |   New Zealand | 4:04.70 | +0.05s | 4 | 20 | 890 | 2. | 58.59s | 2:00.80 | 3:03.49 | QT |  | 4. Eve Thomas |   New Zealand | 4:06.12 | +1.47s | 3 | 23 | 874 | 5. | 59.51s | 2:01.71 | 3:04.52 | QT |  | 5. Gabrielle Roncatto |   Brazil | 4:06.13 | +1.48s | 6 | 25 | 874 | 6. | 59.11s | 2:01.77 | 3:04.55 | QT |  | 6. Agostina Hein |   Argentina | 4:08.86 | +4.21s | 8 | 15 | 846 | 8. | 59.63s | 2:02.73 | 3:06.21 | CT |  | 7. Nikolett Padar |   Hungary | 4:09.21 | +4.56s | 7 | 17 | 842 | 9. | 1:00.36 | 2:03.59 | 3:06.73 |  | 8. Ichika Kajimoto |   Japan | 4:09.65 | +5.00s | 0 | 19 | 838 | 10. | 1:00.14 | 2:03.27 | 3:06.70 |  | 9. Dune Coetzee |   South Africa | 4:12.03 | +7.38s | 9 | 21 | 814 | 14. | 1:00.53 | 2:04.29 | 3:08.49 |  | 10.Francisca Soares Martins |   Portugal | 4:15.04 | +10.39s | 1 | 20 | 786 | 20. | 59.90s | 2:03.06 | 3:08.21 |   
    | Heat 3 09:58 |   | time | gap | L | Ag | pts | Rk | 50m | 100m | 150m | Ol |  | 1. Isabel Gose |   Germany | 4:05.48 | +0.83s | 4 | 21 | 881 | 3. | 59.37s | 2:01.16 | 3:03.56 | QT |  | 3. Maria Fernanda De Oliveira |   Brazil | 4:05.52 | +0.87s | 2 | 21 | 881 | 4. | 59.63s | 2:01.96 | 3:04.74 | QT |  | 2. Peiqi Yang |   China | 4:06.82 | +2.17s | 3 | 16 | 867 | 7. | 59.77s | 2:01.81 | 3:04.74 | QT |  | 3. Addison Sauickie |   United States | 4:09.67 | +5.02s | 1 | 18 | 837 | 11. | 1:00.53 | 2:02.73 | 3:05.85 |  | 4. Kiah Melverton |   Australia | 4:10.61 | +5.96s | 5 | 27 | 828 | 12. | 1:00.05 | 2:03.08 | 3:07.22 |  | 5. Valentine Dumont |   Belgium | 4:10.96 | +6.31s | 6 | 23 | 825 | 13. | 1:00.38 | 2:03.45 | 3:07.71 |  | 6. Anastasiia Kirpichnikova |   France | 4:13.95 | +9.30s | 7 | 23 | 796 | 15. | 1:01.07 | 2:05.13 | 3:09.71 |  | 7. Imani De Jong |   Netherlands | 4:14.20 | +9.55s | 8 | 21 | 793 | 16. | 1:00.52 | 2:04.62 | 3:09.80 |  | 8. Merve Tuncel |   Turkey | 4:14.47 | +9.82s | 0 | 19 | 791 | 18. | 1:00.66 | 2:04.27 | 3:09.60 |  | 9. Ella Jansen |   Canada | 4:17.01 | +12.36s | 2 | 18 | 768 | 21. | 1:00.91 | 2:04.66 | 3:09.58 |  | 10.Dakyung Han |   South Korea | 4:18.38 | +13.73s | 9 | 24 | 756 | 24. | 59.57s | 2:04.58 | 3:11.74 |   
| Heat 2 09:52 |   | time | gap | L | Ag | pts | Rk | 50m | 100m | 150m |  | 1. Daria Golovaty |   Israel | 4:14.42 | +9.77s | 4 | 18 | 791 | 17. | 1:01.45 | 2:06.08 | 3:10.70 |  | 2. Ching Hwee Gan |   Singapore | 4:14.54 | +9.89s | 5 | 20 | 790 | 19. | 1:01.33 | 2:05.45 | 3:09.88 |  | 3. Maria Victoria Yegres Cottin |   Venezuela | 4:17.65 | +13.00s | 2 | 18 | 762 | 22. | 1:01.44 | 2:06.62 | 3:12.89 |  | 4. Diana Taszhanova |   Kazakhstan | 4:18.15 | +13.50s | 3 | 20 | 758 | 23. | 1:01.16 | 2:06.28 | 3:12.48 |  | 5. Elisbet Gamez Matos |   Cuba | 4:19.91 | +15.26s | 6 | 27 | 742 | 25. | 1:02.11 | 2:07.51 | 3:13.94 |  | 6. Lisa Pou |   Monaco | 4:22.61 | +17.96s | 1 | 24 | 720 | 26. | 1:02.24 | 2:07.84 | 3:14.84 |  | 7. Eva Petrovska |   N. Macedonia | 4:25.21 | +20.56s | 8 | 19 | 699 | 27. | 1:04.67 | 2:11.67 | 3:18.87 |  | 8. Harper Barrowman |   Cayman Islands | 4:27.30 | +22.65s | 0 | 17 | 682 | 28. | 1:04.19 | 2:11.99 | 3:19.19 |  | 9. Gilaine Ma |   Hong Kong | 4:27.52 | +22.87s | 7 | 15 | 681 | 29. | 1:02.46 | 2:09.75 | 3:19.00 |  | 10.Kaltra Meca |   Albania | 4:40.47 | +35.82s | 9 | 15 | 591 | 31. | 1:05.58 | 2:17.44 | 3:29.57 |   
| Heat 1 09:46 |   | time | gap | L | Ag | pts | Rk | 50m | 100m | 150m |  | 1. Malak Meqdar |   Morocco | 4:36.32 | +31.67s | 5 | 16 | 618 | 30. | 1:06.48 | 2:16.89 | 3:27.50 |  | 2. Duana Lama |   Nepal | 4:45.85 | +41.20s | 4 | 17 | 558 | 32. | 1:06.91 | 2:18.82 | 3:32.46 |  | 3. Mashael Meshari A Alayed |   Saudi Arabia | 4:56.42 | +51.77s | 6 | 17 | 500 | 33. | 1:11.75 | 2:25.88 | 3:40.95 |  | -. Karin Belbeisi |   Jordan | DSQ |   | 3 | 15 | - | -. | 1:06.70 | 2:17.53 | 3:28.37 |   
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