| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 782 | Emir Bekric |  SRB | 51.68 Q NJ | 0.201 | 
| 2 | 394 | Jack Green |  GBR | 52.16 Q | 0.200 | 
| 3 | 569 | Jeremiah Kipkorir Mutai |  KEN | 52.53 Q | 0.187 | 
| 4 | 742 | Le Roux Hamman |  RSA | 52.66 | 0.203 | 
| 5 | 601 | Yousef KARAM |  KUW | 54.63 | 0.216 | 
| 6 | 529 | Javarn Gallimore |  JAM | 55.99 | 0.253 | 
| 7 | 487 | Tim Crowe |  IRL | 56.27 | 0.206 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 164 | Stef Vanhaeren |  BEL | 51.64 Q | 0.164 | 
| 2 | 436 | Varg Königsmark |  GER | 51.78 Q | 0.208 | 
| 3 | 304 | Xavier Carrión |  ESP | 51.80 Q | 0.150 | 
| 4 | 773 | Amadou Ndiaye |  SEN | 51.83 q PB | 0.195 | 
| 5 | 511 | Francesco Patano |  ITA | 52.51 q | 0.231 | 
| 6 | 854 | Anatoliy Synyanskyy |  UKR | 53.20 | 0.191 | 
| 7 | 227 | Tait Nystuen |  CAN | 53.21 | 0.169 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 576 | Bonface Mucheru |  KEN | 51.46 Q | 0.246 | 
| 2 | 500 | José Reynaldo Bencosme De Leon |  ITA | 51.86 Q | 0.173 | 
| 3 | 672 | Michael Cochrane |  NZL | 52.25 Q PB | 0.170 | 
| 4 | 424 | Tobias Giehl |  GER | 52.28 q | 0.224 | 
| 5 | 115 | Sasha Alexeenko |  AUS | 52.71 | 0.190 | 
| 6 | 538 | Nolan Williams |  JAM | 54.67 | 0.185 | 
| 7 | 638 | Damien Edouard |  MRI | 55.31 PB | 0.202 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 541 | Takatoshi ABE |  JPN | 50.53 Q SB | 0.193 | 
| 2 | 832 | Zied Azizi |  TUN | 51.40 Q NJ | 0.301 | 
| 3 | 812 | Chieh CHEN |  TPE | 52.26 Q | 0.212 | 
| 4 | 272 | Radek Fischer |  CZE | 52.64 | 0.199 | 
| 5 | 745 | Pieter Marx |  RSA | 52.89 | 0.142 | 
| 6 | 108 | Abdelmalik LAHOULOU |  ALG | 53.00 PB | 0.259 | 
| 7 | 137 | Nejmi Burnside |  BAH | 54.17 | 0.187 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 185 | Hederson Estefani |  BRA | 52.07 Q | 0.211 | 
| 2 | 489 | Patrick Maher |  IRL | 52.46 Q | 0.193 | 
| 3 | 668 | Øyvind Strømmen KJERPESET |  NOR | 52.82 Q | 0.189 | 
| 4 | 912 | Steven White |  USA | 53.27 | 0.160 | 
| 5 | 590 | Ali Ayedh Al-Ghamdi |  KSA | 56.04 | 0.218 | 
| 6 | 209 | Daniel Chan |  CAN | 58.46 | 0.248 | 
| 379 | Stéphane Yato |  FRA | DNF | 0.180 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 824 | Jehue Gordon |  TTO | 51.58 Q | 0.181 | 
| 2 | 498 | Leslie Murray |  ISV | 51.94 Q | 0.147 | 
| 3 | 634 | Juan Stenner |  MEX | 52.29 Q | 0.178 | 
| 4 | 375 | Hakim Reguieg |  FRA | 52.85 | 0.222 | 
| 5 | 286 | Juan Pablo MartÃnez |  DOM | 52.88 | 0.206 | 
| 6 | 327 | Rasmus MÄGI |  EST | 53.86 | 0.238 | 
| 7 | 733 | Adrian Minca |  ROU | 56.44 | 0.252 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 182 | João Vitor DE OLIVEIRA |  BRA | 51.92 Q | 0.146 | 
| 2 | 788 | Jonathan Puemi |  SUI | 53.25 Q | 0.165 | 
| 3 | 877 | Sheroid Evans |  USA | 53.44 Q | 0.185 | 
| 4 | 628 | José Castañeda |  MEX | 53.62 | 0.207 | 
| 5 | 776 | Mitja Lindic |  SLO | 54.15 | 0.178 | 
| 6 | 624 | Abdul Azlan Samsuddin |  MAS | 54.21 | 0.182 | 
| 7 | 563 | Dmitriy Koblov |  KAZ | 54.31 | 0.190 |