| POS | BIB | ATHLETE | COUNTRY | MARK | ms* | Reaction Time | 
|---|---|---|---|---|---|---|
| 1 | 313 | Karsten WARHOLM |  NOR | 46.68 Q SB | 0.160 | |
| 2 | 354 | Rok FERLAN |  SLO | 47.04 Q | .036 | 0.181 | 
| 3 | 412 | Jacory PATTERSON |  USA | 47.04 | .038 | 0.165 | 
| 4 | 290 | Graham PELLEGRINI |  MLT | 48.00 | 0.184 | |
| 5 | 141 | Ibrahim AYORINDE |  CAN | 48.05 | 0.172 | |
| 259 | Kentaro SATO |  JPN | DNS | 
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 10.74 |  Karsten WARHOLM |  NOR | 
| 200 m | 21.60 |  Karsten WARHOLM |  NOR | 
| 300 m | 33.89 |  Karsten WARHOLM |  NOR | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 168 | Matěj KRSEK |  CZE | 46.07 Q | 0.146 | 
| 2 | 252 | Rusheen MCDONALD |  JAM | 46.25 Q PB | 0.182 | 
| 3 | 132 | Lucas CARVALHO |  BRA | 46.82 q PB | 0.160 | 
| 4 | 101 | Franko BURRAJ |  ALB | 46.86 q SB | 0.196 | 
| 5 | 276 | Tomas KERŠULIS |  LTU | 47.92 | 0.134 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.04 |  Matěj KRSEK |  CZE | 
| 200 m | 21.75 |  Matěj KRSEK |  CZE | 
| 300 m | 33.49 |  Matěj KRSEK |  CZE | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 229 | Attila MOLNÁR |  HUN | 46.52 Q | 0.146 | 
| 2 | 308 | Dubem NWACHUKWU |  NGR | 46.91 Q | 0.171 | 
| 3 | 339 | Omar ELKHATIB |  POR | 46.99 q PB | 0.148 | 
| 4 | 375 | Jereem RICHARDS |  TTO | 47.04 q SB | 0.174 | 
| 5 | 164 | Michal DESENSKÝ |  CZE | 47.48 | 0.169 | 
| 6 | 351 | Rashid MOIWA |  SLE | 53.48 NR | 0.203 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 10.89 |  Jereem RICHARDS |  TTO | 
| 200 m | 21.68 |  Jereem RICHARDS |  TTO | 
| 300 m | 33.87 |  Jereem RICHARDS |  TTO | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 121 | Alexander DOOM |  BEL | 46.11 Q | 0.197 | 
| 2 | 337 | João COELHO |  POR | 46.35 Q NR | 0.237 | 
| 3 | 394 | Brian FAUST |  USA | 47.11 | 0.168 | 
| 4 | 274 | Artūrs PASTORS |  LAT | 47.53 PB | 0.172 | 
| 5 | 138 | Lucas VILAR |  BRA | 47.92 | 0.169 | 
| 6 | 235 | Malique SMITH |  ISV | 49.68 SB | 0.145 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.15 |  Alexander DOOM |  BEL | 
| 200 m | 21.75 |  Alexander DOOM |  BEL | 
| 300 m | 33.47 |  Alexander DOOM |  BEL |