| B Final | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Mira Jeanne Maack | 20 | SB7 | GERMANY | 1:49.50 |
| 2 | 2 | Katarina Roxon | 31 | SB8 | CANADA | 1:31.26 |
| 3 | 3 | Liesette Bruinsma | 24 | SB11 | NETHERLANDS | 1:29.36 |
| 4 | 4 | Poppy Maskill | 19 | SB14 | GBR - ALSN | 1:24.06 |
| 5 | 5 | Pernilla Lindberg | 30 | SB14 | SWEDEN | 1:24.35 |
| 6 | 6 | Scarlett Humphrey | 19 | SB11 | GBR - NHNA | 1:30.45 |
| 7 | 7 | Lily Rice | 20 | SB7 | GBR - PEMY | 1:49.26 |
| 8 | 8 | Berta Garcia Grau | 19 | SB4 | SPAIN | 2:03.23 |