800m Men Nat heats, Heat:1 of 6 ; Official result since 16:19
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 732 | FRANCKEN SEBBE | OLSE | Jun | 1:53.93 | |||
| 2 | 6 | 739 | VANATTENHOVEN MATTHIAS | DCLA | Sen | 1:54.53 | |||
| 3 | 7 | 737 | VAN DER BURGT THIJS | RCG | Sen | 1:55.96 | |||
| 4 | 1 | 734 | LATINNE REYNALDO | AVT | Sen | 1:56.82 | |||
| 5 | 2 | 740 | VERBIEST THOMAS | ACHL | Sen | 1:57.16 | |||
| 6 | 8 | 735 | LEYON ROBIN | HF | Sen | 1:57.18 | |||
| 7 | 4 | 728 | AMERYCKX BASTIAAN | OPW | Sch | 1:57.18 | |||
| 8 | 3 | 731 | EON BENJAMIN | FRA | Sen | 2:01.09 | |||
| 9 | 733 | GRYMONPON JOOST | BEL | Mas | DNF |