| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 4 | Kovács Kálmán Kristóf (2014)Debreceni Sportc. SI | 01:42.93 | - | 125 | |
50m50.17 R:0.78 100m01:42.9352.76 -
| ||||||
| 2 | 6 | Tanczikó Bálint (2014)Kőbánya Sport Club | 01:44.54 | 01.61 | 120 | |
50m49.39 R:0.76 100m01:44.5455.15 -
| ||||||
| 3 | 5 | Gelegonya Levente (2016)Budapesti Honvéd SE | 01:46.05 | 03.12 | 115 | |
50m51.94 R:0.68 100m01:46.0554.11 -
| ||||||
| 4 | 7 | Dilingai Nimród (2013)Budapesti Honvéd SE | 01:47.07 | 04.14 | 111 | |
50m53.03 R:0.54 100m01:47.0754.04 -
| ||||||
| 5 | 1 | Dalmadi Ádám (2015)BVSC-Zugló | 01:48.14 | 05.21 | 108 | |
50m52.90 R:0.76 100m01:48.1455.24 -
| ||||||
| 6 | 2 | Végh Tamás (2015)Debreceni Sportc. SI | 01:48.73 | 05.80 | 106 | |
50m53.99 R:0.88 100m01:48.7354.74 -
| ||||||
| 7 | 8 | Kakuk Áron (2015)Egri Úszó Klub SE | 01:53.87 | 10.94 | 93 | |
50m55.07 R:0.81 100m01:53.8758.80 -
| ||||||
| 8 | 3 | Tordai Dániel (2017)Kőbánya Sport Club | 01:55.95 | 13.02 | 88 | |
50m55.91 R:0.73 100m01:55.9501:00.04 -
| ||||||