| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Buzás-Főzy Zsombor (2016)BVSC-Zugló | 48.44 | - | 80 | |
| 2 | 5 | Kirschner Márton (2017)BVSC-Zugló | 49.91 | 01.47 | 73 | |
| 3 | 4 | Szeles Dominik Gergely (2017)Kőbánya Sport Club | 50.99 | 02.55 | 68 | |
| 4 | 7 | Calin Ádám (2016)BVSC-Zugló | 52.04 | 03.60 | 64 | |
| 5 | 1 | Gombár Botond Làszló (2015)BVSC-Zugló | 54.27 | 05.83 | 57 | |
| 6 | 2 | Tanczikó Benedek (2017)Kőbánya Sport Club | 56.18 | 07.74 | 51 | |
| 7 | 3 | Grosz László (2016)BVSC-Zugló | 59.44 | 11.00 | 43 |