| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 5 | Curt Matei (2016)CSM Arad | 00:46.33 | - | 91 | |
| 2 | 7 | Torok Albert (2014)Aquasport Timisoara | 00:48.34 | 00:02.01 | 80 | |
| 3 | 3 | Szívós Mihály Milán (2014)Algyő | 00:49.43 | 00:03.10 | 75 | |
| 4 | 0 | Szaszkó Szilárd (2016)Four Diamonds SE | 00:50.87 | 00:04.54 | 69 | |
| 5 | 4 | Șontea Andrei Alexandru (2015)Cs Delfin Timişoara | 00:51.72R:0.46 | 00:05.39 | 66 | |
| 6 | 8 | Kovács Milán (2016)KESI | 00:53.28 | 00:06.95 | 60 | |
| 7 | 1 | László Zalán (2016)Szegedi Úszó Egylet | 00:54.79 | 00:08.46 | 55 | |
| 8 | 6 | Fazekas Benett Gábor (2016)KESI | 00:55.93 | 00:09.60 | 52 | |
| 9 | 2 | Poinar Deian (2017)CSM Arad | 01:07.51 | 00:21.18 | 29 | |
| - | 9 | Olasz Gergő (2016)Hód Úszó SE | DNS |