| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 347 | SpirÃdon-Ioánnis Papadópoulos |  GRE | 50.79 Q PB | 0.165 | 
| 2 | 481 | Bandar Yahya Shraheli |  KSA | 50.83 Q PB | 0.186 | 
| 3 | 747 | Stanislav Melnykov |  UKR | 50.87 q | 0.175 | 
| 4 | 495 | Arturas Kulnis |  LTU | 51.92 | 0.214 | 
| 5 | 530 | Marius Kranendonk |  NED | 52.06 | 0.173 | 
| 6 | 766 | Joe Greene |  USA | 53.24 | 0.177 | 
| 7 | 180 | Andreas BUBE |  DEN | 53.35 | 0.193 | 
| 8 | 471 | Kyungmin Yoo |  KOR | 53.74 | 0.252 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 637 | Viacheslav Sakaev |  RUS | 51.30 Q | 0.156 | 
| 2 | 529 | Daniël Franken |  NED | 51.48 Q | 0.156 | 
| 3 | 335 | Stephan Stoll |  GER | 51.64 | 0.170 | 
| 4 | 477 | Mohammed Yahya Daak |  KSA | 51.78 PB | 0.189 | 
| 5 | 34 | Andrew Yong |  AUS | 51.91 PB | 0.153 | 
| 6 | 429 | Junya Imai |  JPN | 52.15 | 0.141 | 
| 7 | 545 | Nick Kalivati |  NZL | 53.08 | 0.174 | 
| 599 | Wiekus Jonck |  RSA | DQ | 0.164 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 762 | Chris Carter |  USA | 50.70 Q | 0.165 | 
| 2 | 459 | John Kituu Wambua |  KEN | 51.19 Q PB | 0.177 | 
| 3 | 142 | Zipei Yu |  CHN | 51.57 q | 0.177 | 
| 4 | 176 | Josef Prorok |  CZE | 52.29 | 0.178 | 
| 5 | 594 | Juan Bloem |  RSA | 52.90 | 0.258 | 
| 6 | 401 | Edoardo Guaschino |  ITA | 53.27 | 0.181 | 
| 7 | 715 | Ching-Chun Wang |  TPE | 53.93 | 0.154 | 
| 355 | Hans Villagrán |  GUA | DNS | 0.000 |