The Women's 400 metre freestyle competition of the 2021 FINA World Swimming Championships (25 m) was held on 19 December 2021.

Records Prior to the competition, the existing world and championship records were as follows.

Results Heats The heats were started at 10:14.Heats results

Rank Heat Lane Name Nationality Time Notes 1 5 7 Li Bingjie 4:01.26 Q 2 5 5 Anastasiya Kirpichnikova Russian Swimming Federation 4:01.35 Q 3 5 4 Summer McIntosh 4:01.82 Q 4 4 4 Siobhán Haughey 4:02.57 Q 5 5 2 Anna Egorova Russian Swimming Federation 4:02.66 Q 6 4 7 Paige Madden 4:03.03 Q 7 4 3 Isabel Marie Gose 4:03.13 Q 8 3 5 Joanna Evans 4:03.58 Q 9 5 6 Ajna Késely 4:03.84 10 4 5 Simona Quadarella 4:03.93 11 4 2 Freya Anderson 4:03.94 12 5 0 Nathalia Almeida 4:06.13 13 3 2 Emma Weyant 4:06.71 14 5 1 Martina Caramignoli 4:06.89 15 5 8 Merve Tuncel 4:07.39 16 2 1 Anja Crevar 4:07.49 NR 17 5 9 Han Da-kyung 4:08.52 18 3 9 Elisbet Gámez 4:09.08 19 4 1 Beril Böcekler 4:09.16 20 4 6 Valentine Dumont 4:09.35 21 4 0 Leonie Kullmann 4:09.41 22 5 3 Charlotte Bonnet 4:10.10 23 4 8 Gabrielle Roncatto 4:10.34 24 3 7 Monique Olivier 4:10.57 25 3 4 Ryu Ji-won 4:11.06 26 3 1 Lena Opatril 4:11.95 27 2 2 Zhanet Angelova 4:12.58 27 4 9 Diana Durães 4:12.58 29 2 4 María de Valdés 4:12.86 30 3 6 Laura Lahtinen 4:16.77 31 3 0 Michaela Pulford 4:17.27 32 2 5 Delfina Dini 4:17.51 33 1 5 Daniela Alfaro 4:18.79 34 2 3 Iman Avdić 4:19.54 35 2 0 Arianna Valloni 4:21.54 36 2 7 Sasha Gatt 4:21.65 36 3 8 Matea Sumajstorčić 4:21.65 38 2 8 Eva Petrovska 4:26.38 39 1 6 Natalia Kuipers 4:26.48 40 2 9 Fatima Alkaramova 4:29.12 41 1 4 Michell Ramírez 4:31.26 42 1 2 Katie Rock 4:35.55 43 1 7 Alexia Savinova 4:37.13 44 1 1 Bianca Mitchell 4:37.56 45 1 8 Keana Santos 5:04.07 1 3 Talita Te Flan DNS 2 6 Sabína Kupčová 3 3 Quah Jing Wen

Final The final was held at 18:49.Final results Rank Lane Name Nationality Time Notes 4 Li Bingjie 3:55.83 3 Summer McIntosh 3:57.87 6 Siobhán Haughey 3:58.12 4 5 Anastasiya Kirpichnikova Russian Swimming Federation 3:58.56 5 7 Paige Madden 3:59.58 6 1 Isabel Marie Gose 4:00.82 7 8 Joanna Evans 4:01.09 8 2 Anna Egorova Russian Swimming Federation 4:02.11

References