| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Somogyi Sándor (2015)FTC | 44.15R:0.72 | - | 154 | |
| 2 | 5 | Kőnig Konor Kende (2016)FTC | 44.74R:0.7 | 00.59 | 148 | |
| 3 | 3 | Csajági Dániel (2014)Iron Swim SE | 46.31R:0.63 | 02.16 | 134 | |
| 4 | 4 | Laczkó Olivér (2014)Kőbánya Sport Club | 46.48R:0.58 | 02.33 | 132 | |
| 5 | 2 | Valkai Bátor (2014)Monori Sport Egyes. | 46.74R:0.7 | 02.59 | 130 | |
| 6 | 8 | Juhász Vince (2013)Érdi Vízisport Kft | 46.76R:0.88 | 02.61 | 130 | |
| 7 | 1 | Könyű Merse Barnabás (2013)MATE - GEAC | 47.88R:0.79 | 03.73 | 121 | |
| 8 | 7 | Kürti-Végh Kolos (2014)Kecskeméti Junior Sport Nonprofit KFT. | 49.57R:0.65 | 05.42 | 109 |