| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 3 | Kozma Hanna (2012)Miskolci Sportiskola | 45.94 | - | 259 | |
| 2 | 4 | Márton Tamara (2013)Miskolci Sportiskola | 46.50 | 00.56 | 250 | |
| 3 | 6 | Demeter Bella Luca (2014)Miskolci Sportiskola | 46.55 | 00.61 | 249 | |
| 4 | 7 | Elekes Alíz (2014)BVSC-Zugló | 46.83 | 00.89 | 244 | |
| 5 | 2 | Pinezits Szofi (2012)Budapesti Honvéd | 46.89 | 00.95 | 243 | |
| 6 | 1 | Wolf Alexandra Boglárka (2013)Kőbánya Sport Club | 47.79 | 01.85 | 230 | |
| 7 | 5 | Szántó Norina (2012)Budafóka XXII. SE | 49.67 | 03.73 | 205 | |
| - | 8 | Máth Júlia (2015)MATE - GEAC | DSQ |