| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Fazekas Mimi Janka (2011)Bohóchal | 39.03R:0.56 | - | 417 | |
| 2 | 4 | Bárány Beatrix (2011)Monori Sport Egyes. | 39.71R:0.85 | 00.68 | 395 | |
| 3 | 3 | Szilágyi Hanna Sára (2009)Érdi Vízisport Kft | 40.45R:0.62 | 01.42 | 374 | |
| 4 | 2 | Kristóf Kyra Anna (2010)Bohóchal | 40.92R:0.73 | 01.89 | 361 | |
| 5 | 7 | Udvarhelyi Zsófia Laura (2009)Érdi Vízisport Kft | 41.51R:0.69 | 02.48 | 346 | |
| 6 | 5 | Koch Nóra (2010)Soproni Széchy T. SI | 42.03R:0.7 | 03.00 | 333 | |
| 7 | 8 | Izinger Kinga (2006)Hullám 91 | 42.33R:0.72 | 03.30 | 326 | |
| 8 | 0 | Végh Lilla (2011)Kőbánya Sport Club | 42.69R:0.66 | 03.66 | 318 | |
| 9 | 1 | Körmendy Viktória (2011)Csepeli Öttusa Vizis | 43.04R:0.71 | 04.01 | 310 | |
| 10 | 9 | Iszák Jázmin (2010)M-Mekler László SE | 43.48R:0.75 | 04.45 | 301 |