| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 7 | Legény Bence (2015)Kőbánya Sport Club | 41.37 | - | 129 | |
| 2 | 5 | Zsidai Dániel (2016)FTC | 41.41 | 00.04 | 128 | |
| 3 | 4 | Büki Norbert János (2016)FTC | 41.80 | 00.43 | 125 | |
| 4 | 3 | Ferenczi Sándor (2015)BVSC-Zugló | 42.11 | 00.74 | 122 | |
| 5 | 2 | Kardos Tibor Kristóf (2015)FTC | 42.32 | 00.95 | 120 | |
| 6 | 1 | Piák Csaba Zalán (2014)Érdi Vízisport Kft | 43.35 | 01.98 | 112 | |
| 7 | 6 | Urbán Mirkó (2015)FTC | 44.09 | 02.72 | 106 | |
| 8 | 8 | Hörich Misa Sámuel (2016)Bohóchal | 47.59 | 06.22 | 84 |