| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 4 | Pusztai Dániel (2013)Budapesti Honvéd Sportegyesület | 00:41.84 | - | 178 | |
| 2 | 6 | Katona Zétény (2016)FTC | 00:47.04R:0.63 | 00:05.20 | 125 | |
| 3 | 2 | Gertner Milán (2014)Városi Sportegyesület Dunakeszi | 00:48.16R:0.69 | 00:06.32 | 116 | |
| 4 | 7 | Varga Márton Patrik (2016)Budapesti Honvéd Sportegyesület | 00:48.51 | 00:06.67 | 114 | |
| 5 | 3 | Táska Olivér (2016)FTC | 00:50.61R:0.29 | 00:08.77 | 100 | |
| 6 | 1 | Molnár-Szalai András Béla (2015)Budapesti Honvéd Sportegyesület | 00:52.35R:0.14 | 00:10.51 | 91 | |
| 7 | 5 | Tanczikó Benedek (2017)Kőbánya Sport Club | 00:59.43R:0.64 | 00:17.59 | 62 |