400 metres Freestyle, Women
Participants
| Nr. | Athlete | NOC |
|---|---|---|
| 1 | Tamsin Cook |  AUS |
| 2 | Ariarne Titmus | AUS |
| 3 | Marlene Kahler |  AUT |
| 4 | Joanna Evans |  BAH |
| 5 | Summer McIntosh |  CAN |
| 6 | Li Bingjie |  CHN |
| 7 | Tang Muhan | CHN |
| 8 | Talita Te Flan |  CIV |
| 9 | Isabel Gose |  GER |
| 10 | Leonie Kullmann | GER |
| 11 | Ajna Késely |  HUN |
| 12 | Natalia Kuipers |  ISV |
| 13 | Waka Kobori |  JPN |
| 14 | Miyu Namba | JPN |
| 15 | Han Da-Gyeong |  KOR |
| 16 | Eda Zeqiri |  KOS |
| 17 | Julia Hassler |  LIE |
| 18 | Tiana Rabarijaona |  MAD |
| 19 | Sasha Gatt |  MLT |
| 20 | Erika Fairweather |  NZL |
| 21 | Anastasiya Kirpichnikova |  ROC |
| 22 | Anna Yegorova | ROC |
| 23 | Beril Böcekler |  TUR |
| 24 | Merve Tuncel | TUR |
| 25 | Katie Ledecky |  USA |
| 26 | Paige Madden | USA |