| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 5 | Vásárhelyi Dóra (2014)NYSC | 43.55 | - | 300 | |
| 2 | 3 | Elekes Alíz (2014)BVSC-Zugló | 45.07 | 01.52 | 270 | |
| 3 | 4 | Demeter Bella Luca (2014)Miskolci Sportiskola | 45.59 | 02.04 | 261 | |
| 4 | 6 | Karczag Kira Jázmin (2014)Miskolci Sportiskola | 46.64 | 03.09 | 244 | |
| 5 | 7 | Takács Lilla Dóra (2014)Budaörsi Sport Club | 47.61 | 04.06 | 229 | |
| 6 | 2 | Máth Júlia (2015)MATE - GEAC | 48.40 | 04.85 | 218 | |
| 7 | 8 | Koncz Nóra (2015)MATE - GEAC | 48.93 | 05.38 | 211 | |
| 8 | 1 | Gaál Alíz (2014)Miskolci Sportiskola | 53.46 | 09.91 | 162 |