| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 1 | Kamburov Zorka Tímea (2014)Csepeli Öttusa Vizis | 00:43.78R:0.87 | - | 141 | |
| 2 | 5 | Farkas Dóra Emese (2017)VS Dunakeszi | 00:44.37 | 00:00.59 | 136 | |
| 3 | 4 | Kaposi Sára Arsema (2016)Csepeli Öttusa Vizis | 00:44.86R:0.96 | 00:01.08 | 131 | |
| 4 | 3 | Nyéky Julianna Karola (2017)Darnyi Tamás SC | 00:47.18 | 00:03.40 | 113 | |
| 5 | 6 | Szmerek Júlia (2017)Darnyi Tamás SC | 00:50.47R:0.81 | 00:06.69 | 92 | |
| 6 | 2 | Szálka Izabella (2017)Darnyi Tamás SC | 00:51.44 | 00:07.66 | 87 | |
| 7 | 8 | Hidvégi Laura (2018)Darnyi Tamás SC | 00:51.85 | 00:08.07 | 85 | |
| 8 | 7 | Kőrösi Ziva Bella (2018)Kőbánya Sport Club | 00:59.81R:0.72 | 00:16.03 | 55 |