| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 3 | Csurka Luca (2014)NYSC | 51.20 | - | 184 | |
| 2 | 2 | Harmati Zsófia (2015)Debreceni Sportc. SI | 51.27 | 00.07 | 183 | |
| 3 | 6 | Bernáth Blanka (2015)Miskolci Sportiskola | 51.36R:0.6 | 00.16 | 183 | |
| 4 | 7 | Barta Liza (2014)Debreceni Sportc. SI | 51.72 | 00.52 | 179 | |
| 5 | 8 | Szlovák Panna Dóra (2015)Debreceni Sportc. SI | 55.91 | 04.71 | 141 | |
| 6 | 0 | Ardelean Olivia Ameli (2016)Létavértes | 57.03 | 05.83 | 133 | |
| 7 | 9 | Radvánszki Léna (2015)NYSC | 58.07 | 06.87 | 126 | |
| - | 4 | Demeter Bella Luca (2014)Miskolci Sportiskola | DNS | |||
| - | 5 | Gaál Alíz (2014)Miskolci Sportiskola | DNS | |||
| - | 1 | Besenyei Alexandra (2015)Egri Úszó Klub SE | DNS |