| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 5 | Nagy Laura Hanna (2012)Százhalombattai VUKSE | 00:43.17 | - | 149 | |
| 2 | 4 | Gyulavári Andrea Viktória (2016)Százhalombattai VUKSE | 00:45.61 | 00:02.44 | 127 | |
| 3 | 6 | Budaházi Zsóka (2014)Százhalombattai VUKSE | 00:45.68 | 00:02.51 | 126 | |
| 4 | 2 | Jankovics Nóra Zoé (2013)Százhalombattai VUKSE | 00:49.66 | 00:06.49 | 98 | |
| 5 | 1 | Hamvai Janina (2017)Százhalombattai VUKSE | 00:50.33 | 00:07.16 | 94 | |
| 6 | 3 | André Hanna (2017)Vitál Sport | 00:50.39 | 00:07.22 | 94 | |
| 7 | 7 | Kaposi Sára Arsema (2016)Csepeli Öttusa Vizisport | 00:51.39 | 00:08.22 | 88 |