| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 4 | Lajtai Izabella (2016)Soproni Széchy T. SI | 00:42.39R:0.53 | - | 191 | |
| 2 | 5 | Szalay Júlia (2017)BVSC-Zugló | 00:43.24R:0.59 | 00:00.85 | 180 | |
| 3 | 3 | Luong Thao Nhi (2017)BVSC-Zugló | 00:45.76 | 00:03.37 | 152 | |
| 4 | 2 | Roncs Viola (2016) UNI Győri Úszó Sportegy. | 00:47.82 | 00:05.43 | 133 | |
| 5 | 6 | Tari Szonja (2017)BVSC-Zugló | 00:48.29R:0.76 | 00:05.90 | 129 | |
| 6 | 1 | Szabó Emma (2016)BVSC-Zugló | 00:50.50 | 00:08.11 | 113 | |
| 7 | 7 | Ábrahám Natália (2017)BVSC-Zugló | 00:50.90R:0.8 | 00:08.51 | 110 | |
| 8 | 8 | Varga Amina Éva (2016) UNI Győri Úszó Sportegy. | 01:07.29R:0.49 | 00:24.90 | 47 |