| 1 | Óscar Husillos | ESP | 46,31 | Q | |
| 2 | Luka Janežic | SLO | 46,60 | Q | |
| 3 | Fabrisio Saidy | FRA | 47,07 | q | |
| 4 | Janis Leitis | LAT | 47,36 | ||
| 5 | Owen Smith | GBR | 47,39 | ||
| Karol Zalewski | POL | DNS |
| 1 | Karsten Warholm | NOR | 45,95 | Q | |
| 2 | Tony Van Diepen | NED | 46,62 | Q | |
| 3 | Lucas Bua | ESP | 46,81 | q | |
| 4 | Vitaliy Butrym | UKR | 47,20 | ||
| 5 | Manuel Guijarro | ESP | 47,34 | ||
| 6 | Cameron Chalmers | GBR | 47,83 |