800m Men Nat heats, Heat:1 of 5 ; Official result since 16:08
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 52 | 338 | BRUERS YANN | ACHL | Sen | 1:54.30 | |||
| 2 | 51 | 348 | VAN NIEUWENHOVE STIJN | AVLO | Jun | 1:55.40 | |||
| 3 | 21 | 337 | BAKKER JEROEN | NED | Sen | 1:55.77 | |||
| 4 | 41 | 345 | PORMES TWAN | NED | Sen | 1:56.14 | |||
| 5 | 62 | 341 | DE MAERSSCHALCK PIETER | LEBB | Sen | 1:57.40 | |||
| 6 | 11 | 342 | HENRI ARNE | ADD | Sen | 1:58.11 | |||
| 7 | 31 | 339 | CAMPBELL EUAN | GBR | Sen | 1:59.02 | |||
| 81 | 344 | LANSSENS MICHIEL | BEL | Sen | DNF | ||||
| 61 | 346 | PUTZ JOSH | LUX | Sen | DNS | ||||
| 71 | 349 | WILLIAMS JACK | CAN | Sen | DNS |