400m BOYS , Heat:2 of 2 ; Official result since 18:15
| Rank | Lane | ID | Name | SB | Team | Cat | Result | Info | Video |
| 1 | 2 | 34 | DOOM Alexander | 49.03 | BEL | Youth | 49.59 | Q | |
| 2 | 5 | 417 | ZUPANC Anej | 49.46 | SLO | Youth | 49.79 | Q | |
| 3 | 6 | 72 | STOYANOV Zhivko | 50.82 | BUL | Youth | 51.01 | Q | |
| 4 | 7 | 79 | STOJANOVIC Gabrijel | 50.30 | CRO | Youth | 51.48 | ||
| 5 | 8 | 452 | KUCERA Michal | 51.12 | SVK | Youth | 51.96 | ||
| 6 | 3 | 312 | CRASICOV Artiom | 50.25 | MDA | Youth | 54.10 | ||
| 4 | 142 | TAMMARU Andre | 52.25 | EST | Youth | DIS | ART.163.3A |