| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 377 | Masaki TOYODA | 
                                         
                                        JPN
                                     | 
                                    50.72 Q WYL | 0.169 | 
| 2 | 387 | Emmanuel Kipyegon Langat | 
                                         
                                        KEN
                                     | 
                                    51.13 Q PB | 0.207 | 
| 3 | 37 | Rivaldo Leacock | 
                                         
                                        BAR
                                     | 
                                    51.20 q PB | 0.149 | 
| 4 | 201 | Aleix PORRAS | 
                                         
                                        ESP
                                     | 
                                    52.38 | 0.124 | 
| 5 | 294 | José Humberto Bermúdez | 
                                         
                                        GUA
                                     | 
                                    52.39 PB | 0.313 | 
| 6 | 87 | Cody Pauli | 
                                         
                                        CAN
                                     | 
                                    52.52 PB | 0.172 | 
| 7 | 181 | Pablo Andres IBAÑEZ GUEVARA | 
                                         
                                        ESA
                                     | 
                                    52.56 PB | 0.208 | 
| 8 | 632 | Cory Poole | 
                                         
                                        USA
                                     | 
                                    52.88 | 0.163 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 362 | Ryusei Fujii | 
                                         
                                        JPN
                                     | 
                                    51.21 Q | 0.160 | 
| 2 | 352 | Jauavney James | 
                                         
                                        JAM
                                     | 
                                    51.96 Q PB | 0.194 | 
| 3 | 144 | Hrvoje Cukman | 
                                         
                                        CRO
                                     | 
                                    52.33 | 0.203 | 
| 4 | 514 | Gianni Lombard | 
                                         
                                        RSA
                                     | 
                                    52.53 | 0.174 | 
| 5 | 414 | Maksims Sincukovs | 
                                         
                                        LAT
                                     | 
                                    52.63 PB | 0.179 | 
| 6 | 237 | Wilfried HAPPIO | 
                                         
                                        FRA
                                     | 
                                    53.42 | 0.161 | 
| 7 | 337 | Mattia Di Panfilo | 
                                         
                                        ITA
                                     | 
                                    54.35 | 0.177 | 
| 8 | 104 | Mingjian Huang | 
                                         
                                        CHN
                                     | 
                                    57.79 | 0.173 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 623 | Norman GRIMES | 
                                         
                                        USA
                                     | 
                                    51.41 Q | 0.172 | 
| 2 | 586 | Mohamed TOUATI | 
                                         
                                        TUN
                                     | 
                                    51.92 Q PB | 0.179 | 
| 3 | 518 | Morné van As | 
                                         
                                        RSA
                                     | 
                                    51.96 q | 0.171 | 
| 4 | 400 | Hyunbin Kim | 
                                         
                                        KOR
                                     | 
                                    52.51 PB | 0.159 | 
| 5 | 525 | Vladimir Lysenko | 
                                         
                                        RUS
                                     | 
                                    52.75 PB | 0.179 | 
| 6 | 335 | Federico Cesati | 
                                         
                                        ITA
                                     | 
                                    52.87 | 0.216 | 
| 7 | 547 | Darshana M. S. R. U. Kumarabatagallalage | 
                                         
                                        SRI
                                     | 
                                    53.95 | 0.215 | 
| 8 | 2 | Akram Bekhtaoui | 
                                         
                                        ALG
                                     | 
                                    53.96 | 0.170 |