| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 2 | Loran Jayden (2005)Aqua Development | 00:26.55R:0.66 | - | 590 | |
| 2 | 7 | Hussain Mohamed Aan (2004)Aqua Development | 00:27.74R:0.61 | 00:01.19 | 517 | |
| 3 | 5 | Zelenai Zénó (2008)BVSC-Zugló | 00:28.19R:0.68 | 00:01.64 | 493 | |
| 4 | 6 | Tamás Bálint Róbert (1993)Római Sport Egyesüle | 00:32.62R:0.82 | 00:06.07 | 318 | |
| 5 | 3 | Hegedüs Barnabás (2014)Bálinti Úszó Egyes. | 00:46.66R:0.91 | 00:20.11 | 108 | |
| 6 | 4 | Hörich Misa Sámuel (2016)Bohóchal | 00:47.75 | 00:21.20 | 101 | |
| 7 | 8 | Molnár Konrád Péter (2013)Bohóchal | 00:54.12R:0.71 | 00:27.57 | 69 | |
| 8 | 1 | Molnár Edmund László (2013)Bohóchal | 00:57.03 | 00:30.48 | 59 |