# Swimming at the 2022 World Aquatics Championships – Women's 400 metre freestyle

The Women's 400 metre freestyle competition at the 2022 World Aquatics Championships was held on 18 June 2022.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Ariarne Titmus (AUS) | 3:56.40 | Adelaide, Australia | 22 May 2022 |
| Competition record | Katie Ledecky (USA) | 3:58.34 | Budapest, Hungary | 23 July 2017 |
The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 18 June | Final | Katie Ledecky | United States | 3:58.15 | CR |

## Results
### Heats

The heats were started at 10:11.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 4 | Katie Ledecky | United States | 3:59.79 | Q |
| 2 | 4 | 5 | Summer McIntosh | Canada | 4:03.19 | Q |
| 3 | 4 | 3 | Lani Pallister | Australia | 4:03.71 | Q |
| 4 | 4 | 2 | Kiah Melverton | Australia | 4:03.74 | Q |
| 5 | 4 | 6 | Leah Smith | United States | 4:04.43 | Q |
| 6 | 3 | 3 | Erika Fairweather | New Zealand | 4:06.00 | Q |
| 7 | 3 | 5 | Tang Muhan | China | 4:06.29 | Q |
| 8 | 3 | 6 | Isabel Marie Gose | Germany | 4:06.44 | Q |
| 9 | 3 | 2 | Miyu Namba | Japan | 4:08.07 | |
| 10 | 3 | 4 | Li Bingjie | China | 4:08.25 | |
| 11 | 3 | 7 | Waka Kobori | Japan | 4:08.55 | |
| 12 | 4 | 7 | Ajna Késely | Hungary | 4:09.09 | |
| 13 | 3 | 1 | Eve Thomas | New Zealand | 4:09.49 | |
| 14 | 3 | 8 | Freya Anderson | Great Britain | 4:11.82 | |
| 15 | 3 | 9 | Katja Fain | Slovenia | 4:12.05 | |
| 16 | 4 | 0 | Gabrielle Roncatto | Brazil | 4:12.09 | |
| 17 | 4 | 8 | Marlene Kahler | Austria | 4:12.55 | |
| 18 | 3 | 0 | Freya Colbert | Great Britain | 4:12.82 | |
| 19 | 2 | 4 | Han Da-kyung | South Korea | 4:13.29 | |
| 20 | 4 | 9 | Valentine Dumont | Belgium | 4:13.33 | |
| 21 | 2 | 5 | Helena Rosendahl Bach | Denmark | 4:13.36 | |
| 22 | 4 | 1 | Bettina Fábián | Hungary | 4:14.06 | |
| 23 | 2 | 6 | Gan Ching Hwee | Singapore | 4:15.19 | |
| 24 | 2 | 3 | Paula Otero | Spain | 4:18.90 | |
| 25 | 2 | 2 | Zhanet Angelova | Bulgaria | 4:20.55 | |
| 26 | 2 | 7 | Kamonchanok Kwanmuang | Thailand | 4:27.01 | |
| 27 | 2 | 1 | Võ Thị Mỹ Tiên | Vietnam | 4:28.99 | |
| 28 | 2 | 8 | Jamila Boulakbech | Tunisia | 4:32.54 | |
| 29 | 2 | 9 | Natalia Kuipers | U.S. Virgin Islands | 4:33.54 | |
| 30 | 1 | 4 | Jehanara Nabi | Pakistan | 4:37.93 | |
| 31 | 1 | 2 | Bianca Mitchell | Antigua and Barbuda | 4:45.89 | |
| 32 | 1 | 5 | Therese Soukup | Seychelles | 4:46.09 | |
| 33 | 1 | 3 | Arianna Lont | Sint Maarten | 5:19.07 | |
| 34 | 1 | 6 | Keana Santos | Guam | 5:28.52 | |
| — | 2 | 0 | Talita Te Flan | Ivory Coast | DNS | DNS |

### Final

The final was held at 18:41.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Katie Ledecky | United States | 3:58.15 | CR |
| | 5 | Summer McIntosh | Canada | 3:59.39 | NR |
| | 2 | Leah Smith | United States | 4:02.08 | |
| 4 | 3 | Lani Pallister | Australia | 4:02.16 | |
| 5 | 8 | Isabel Marie Gose | Germany | 4:03.47 | |
| 6 | 7 | Erika Fairweather | New Zealand | 4:04.73 | |
| 7 | 6 | Kiah Melverton | Australia | 4:05.62 | |
| 8 | 1 | Tang Muhan | China | 4:10.70 | |