| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 3 | Trần Hưng Nguyên (2003)Vietnam | 00:52.25 | - | 723 | |
50m00:25.69 100m00:52.2500:26.56 +0.87
| ||||||
| 2 | 5 | Ngo Dinh Chuyen (2001)BVSC-Zugló | 00:52.73 | 00:00.48 | 704 | |
50m00:25.65 100m00:52.7300:27.08 +1.43
| ||||||
| 3 | 4 | Török Dominik Márk (2002)BVSC-Zugló | 00:53.08 | 00:00.83 | 690 | |
50m00:26.00 100m00:53.0800:27.08 +1.08
| ||||||
| 4 | 6 | Csicsáky Péter (2003)BVSC-Zugló | 00:53.13 | 00:00.88 | 688 | |
50m00:26.11 100m00:53.1300:27.02 +0.91
| ||||||
| 5 | 7 | Kovács Bálint (2002)BVSC-Zugló | 00:53.25 | 00:01.00 | 683 | |
50m00:26.02 100m00:53.2500:27.23 +1.21
| ||||||
| 6 | 2 | Hồ Nguyễn Duy Khoa (2005)Vietnam | 00:54.16 | 00:01.91 | 649 | |
50m00:26.59 100m00:54.1600:27.57 +0.98
| ||||||
| 7 | 1 | Nguyễn Huy Hoàng (2001)Vietnam | 00:54.19 | 00:01.94 | 648 | |
50m00:26.60 100m00:54.1900:27.59 +0.99
| ||||||
| 8 | 8 | Székely Áron (2004)BVSC-Zugló | 00:54.51 | 00:02.26 | 637 | |
50m00:26.66 100m00:54.5100:27.85 +1.19
| ||||||