| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 4 | Buzás Anna (2013)Komáromi Úszóklub SE | 49.21R:0.69 | - | 164 | |
| 2 | 5 | Rampasekova Patricia (2015)PKNZ | 50.38R:0.82 | 01.17 | 153 | |
| 3 | 2 | Koncz Nóra (2015)MATE - GEAC | 50.79R:0.75 | 01.58 | 149 | |
| 4 | 6 | Pilhál Borbála (2015)FTC | 52.08R:0.59 | 02.87 | 139 | |
| 5 | 8 | Nagy Dorottya (2014)Komáromi Úszóklub SE | 52.47R:0.99 | 03.26 | 135 | |
| 6 | 1 | Pozderka Gréta (2014)Kecskeméti Junior Sport Nonprofit KFT. | 53.64R:0.81 | 04.43 | 127 | |
| 7 | 7 | Jámbrik Dóra (2015)Kecskeméti Junior Sport Nonprofit KFT. | 54.27R:0.61 | 05.06 | 122 | |
| 8 | 3 | Kopasz Léna (2015)BVSC-Zugló | 54.58R:0.7 | 05.37 | 120 |