Olympia
| # | Name | Mannschaft | Zeit | |
|---|---|---|---|---|
| 1 |  | Emma McKeon | Emma McKeon | 55.82s |
| 1 |  | Yufei Zhang | Yufei Zhang | +0.00s |
| 3 |  | Louise Hansson | Louise Hansson | +1.15s |
| 4 |  | Anna Ntountounaki | Anna Ntountounaki | +1.93s |
| 5 | | Brianna Throssell | Brianna Throssell | +2.26s |
| 6 |  | Harriet Jones | Harriet Jones | +2.91s |
| 7 |  | Emilie Beckmann | Emilie Beckmann | +3.02s |
| 8 |  | Sehyeon An | Sehyeon An | +3.50s |
