EVENT 201 Women Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Sophia Gledhill | 15 | Melbourne | |
| 4 | 3 | Alexandra Bassett | 15 | Gold Coast | 4:43.20 |
| 5 | 2 | Kennedy Gordon | 17 | Delhi | 4:55.33 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Matilda Ransome | 16 | Delhi | 4:42.17 |
| 2 | 6 | Kate Kennedy | 15 | Gold Coast | 4:41.55 |
| 3 | 8 | Jess Widdowson | 16 | Gold Coast | 4:32.83 |
| 4 | 10 | Sophie Traill | 15 | Auckland | 4:31.50 |
| 5 | 9 | Ella Blocksidge | 16 | Kuala Lumpur | 4:32.73 |
| 6 | 7 | Louise Bressler | 16 | Auckland | 4:35.49 |
| 7 | 5 | Grace Greenhalf | 15 | Glasgow | 4:41.79 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Megan Speirs | 18 | Delhi | 4:29.55 |
| 2 | 14 | Louise Ashford | 17 | Victoria | 4:29.10 |
| 3 | 16 | Merissa Booth | 17 | Auckland | 4:28.39 |
| 4 | 18 | Lucy Fox | 16 | Auckland | 4:25.50 |
| 5 | 17 | Harriet Oxley | 17 | Manchester | 4:28.30 |
| 6 | 15 | Amelia Brian | 17 | Manchester | 4:28.40 |
| 7 | 13 | Georgia Robertson | 17 | Melbourne | 4:29.55 |
| 8 | 11 | Evangeline Belt | 16 | Delhi | 4:31.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Ashleigh Baillie | 16 | Auckland | 4:21.74 |
| 2 | 22 | Betsy Wizard | 19 | Glasgow | 4:19.82 |
| 3 | 24 | Ella Dyson | 18 | Melbourne | 4:16.52 |
| 4 | 26 | Leah Crisp | 21 | Manchester | 4:14.00 |
| 5 | 25 | Beatrice Varley | 19 | Glasgow | 4:15.54 |
| 6 | 23 | Megan Barnes | 19 | Manchester | 4:19.00 |
| 7 | 21 | Fleur Lewis | 19 | Kuala Lumpur | 4:20.16 |
| 8 | 19 | Livia Kingsland | 17 | Kuala Lumpur | 4:24.70 |