| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 6 | Tekauer Márk (1998)Kőbánya Sport Club | 54.10 | - | 765 | |
50m25.24 100m54.1028.86 +3.62
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| 2 | 4 | Mizsei Márk (2003)Kőbánya Sport Club | 55.11 | 01.01 | 724 | |
50m26.36 100m55.1128.75 +2.39
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| 3 | 5 | Hồ Nguyễn Duy Khoa (2005)Vietnam | 56.06 | 01.96 | 688 | |
50m26.30 100m56.0629.76 +3.46
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| 4 | 3 | Török Dominik Márk (2002)FTC | 56.15 | 02.05 | 685 | |
50m26.43 100m56.1529.72 +3.29
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| 5 | 2 | Trần Hưng Nguyên (2003)Vietnam | 56.45 | 02.35 | 674 | |
50m26.87 100m56.4529.58 +2.71
| ||||||
| 6 | 1 | Kovács Bálint (2002)BVSC-Zugló | 57.04 | 02.94 | 653 | |
50m26.98 100m57.0430.06 +3.08
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| 7 | 7 | Nguyễn Hữu Kim Sơn (2002)Vietnam | 58.56 | 04.46 | 603 | |
50m27.66 100m58.5630.90 +3.24
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| 8 | 8 | Lapos Levente (2004)BVSC-Zugló | 59.25 | 05.15 | 583 | |
50m26.90 100m59.2532.35 +5.45
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