| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Klinszky-Nagy Nanetta (2013)Hullám 91 | 43.62R:0.9 | - | 158 | |
| 2 | 7 | Zhou Lili (2015)Budapesti Honvéd SE | 44.94R:0.65 | 01.32 | 145 | |
| 3 | 0 | Radvanszki Emma (2015)Csepeli Öttusa Vizis | 46.93R:0.99 | 03.31 | 127 | |
| 4 | 3 | Benke Zsófia (2015)Hatvani Úszó Klub SE | 47.00R:0.74 | 03.38 | 126 | |
| 5 | 5 | Szomolánkai Mira (2017)Darnyi Tamás SC | 47.49R:0.47 | 03.87 | 122 | |
| 6 | 1 | Gelegonya Panka (2016)Budapesti Honvéd SE | 47.67 | 04.05 | 121 | |
| 7 | 4 | Simon Enikő (2015)Darnyi Tamás SC | 47.68R:0.81 | 04.06 | 121 | |
| 8 | 2 | Hrahoviczky Zsófia (2016)Újpesti Torna Egylet | 48.08 | 04.46 | 118 | |
| 9 | 8 | Nagy Zselyke (2016)Monori Sport Egyes. | 48.89 | 05.27 | 112 | |
| 10 | 9 | Mikita Emily (2017)Kőbánya Sport Club | 51.59 | 07.97 | 95 |