| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 5 | Juhász Noémi (2015)Monori Sport Egyes. | 52.14R:0.68 | - | 138 | |
| 2 | 4 | Tabi Viktória Dóra (2015)FTC | 53.21R:0.64 | 01.07 | 130 | |
| 3 | 6 | Horogszegi Norina (2015)Kecskeméti Junior Sport Nonprofit KFT. | 54.26R:0.75 | 02.12 | 122 | |
| 4 | 7 | Nagy Zselyke (2016)Monori Sport Egyes. | 54.28R:0.46 | 02.14 | 122 | |
| 5 | 1 | Vágó Stella (2014)Kecskeméti Junior Sport Nonprofit KFT. | 54.59R:0.65 | 02.45 | 120 | |
| 6 | 8 | Simon Eszter (2014)Komáromi Úszóklub SE | 54.88R:0.69 | 02.74 | 118 | |
| 7 | 2 | Szücs Natália (2016)FTC | 57.93R:0.88 | 05.79 | 101 | |
| - | 3 | Szlifka Eliza (2015)FTC | DNS |