| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 4 | Magda Boldizsár (2005)BVSC-Zugló | 50.05 | - | 820 | |
| 2 | 5 | Bóna Benedek (2004)BVSC-Zugló | 50.88 | 00.83 | 781 | |
| 3 | 6 | Covaliov Egor (2004)MÚSZ World Aquatics | 52.47 | 02.42 | 712 | |
| 4 | 1 | Mukalazi Tendo (2002)MÚSZ World Aquatics | 52.53 | 02.48 | 709 | |
| 5 | 7 | Pál Vince (2005)BVSC-Zugló | 52.65 | 02.60 | 705 | |
| 6 | 3 | Kukhalasvili Luka (2002)MÚSZ World Aquatics | 52.77 | 02.72 | 700 | |
| 7 | 8 | Csontos Dominik (2000)Bohóchal Egyesület | 52.78 | 02.73 | 699 | |
| - | 2 | Alshamroukh Saoud (2003)Kuvait | DNS |