| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Zhou Lili (2015)Budapesti Honvéd SE | 51.01R:0.67 | - | 145 | |
| 2 | 7 | Gelegonya Panka (2016)Budapesti Honvéd SE | 51.28R:0.65 | 00.27 | 143 | |
| 3 | 5 | Szabó Zoé Zamira (2016)Debreceni Sportc. SI | 52.18R:0.76 | 01.17 | 136 | |
| 4 | 2 | Marton Szonja Eszter (2015)BVSC-Zugló | 52.71R:0.64 | 01.70 | 132 | |
| 5 | 3 | Szücs Natália (2016)FTC | 53.83R:0.68 | 02.82 | 124 | |
| 6 | 4 | Ollé Borbála (2016)Darnyi Tamás SC | 55.14R:0.62 | 04.13 | 115 | |
| 7 | 8 | Nagy Zselyke (2016)Monori Sport Egyes. | 55.33R:0.67 | 04.32 | 114 | |
| 8 | 1 | Szomolánkai Mira (2017)Darnyi Tamás SC | 56.81R:0.73 | 05.80 | 105 |