| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 307 | Go Tanabe |  JPN | 52.06 Q | 0.265 | 
| 2 | 348 | Bandar Yahya Shraheli |  KSA | 52.93 Q PB | 0.276 | 
| 3 | 487 | Seleke Samake |  SEN | 53.46 Q | 0.352 | 
| 4 | 545 | Tuncay Örs |  TUR | 53.74 q PB | 0.210 | 
| 5 | 536 | Wu-Han Yang |  TPE | 56.62 | 0.248 | 
| 6 | 251 | Camillo Quevedo |  GUA | 58.15 | 0.248 | 
| 107 | Valery Komenan |  CIV | DNF | 0.160 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 468 | Wouter le Roux |  RSA | 51.64 Q | 0.154 | 
| 2 | 211 | Torben Bieler |  GER | 53.73 Q | 0.419 | 
| 3 | 18 | Martin Fladenhofer |  AUT | 54.64 Q | 0.191 | 
| 4 | 104 | Dachang Zhang |  CHN | 56.01 | 0.322 | 
| 5 | 528 | Wei-Ting Lai |  TPE | 56.37 | 0.220 | 
| 6 | 417 | Stephen Gee |  NZL | 56.48 | 0.132 | 
| 404 | Jean Antonio Vieillesse |  MRI | DNF | 0.229 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 585 | Jason Richardson |  USA | 50.95 Q WL | 0.262 | 
| 2 | 304 | Yuki Iwataki |  JPN | 52.61 Q PB | 0.186 | 
| 3 | 233 | KonstadÃnos AnastasÃou |  GRE | 53.60 Q | 0.171 | 
| 4 | 353 | Bandar Yahya Shraheli |  KSA | 53.74 q PB | 0.154 | 
| 5 | 81 | Trent Ratzlaff |  CAN | 55.58 | 0.185 | 
| 6 | 611 | Esteban Lucero |  ECU | 56.14 | 0.147 | 
| 7 | 393 | Jaime Peña |  MEX | 56.78 | 0.147 | 
| 8 | 460 | Tarepa Bourgery |  PYF | 58.91 | 0.247 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 561 | Jamaal Charles |  USA | 52.53 Q | 0.141 | 
| 2 | 466 | Johann Hanekom |  RSA | 52.82 Q | 0.133 | 
| 3 | 450 | Milton Dias |  POR | 53.36 Q | 0.197 | 
| 4 | 68 | Quinton Gamble |  CAN | 53.39 q PB | 0.196 | 
| 5 | 296 | Josef Robertson |  JAM | 53.54 q PB | 0.222 | 
| 6 | 598 | VÃctor Solarte |  VEN | 54.37 | 0.153 | 
| 7 | 30 | Afzal Hossain |  BAN | 59.18 | 0.174 | 
| 8 | 29 | Kayuse Burrows |  BAH | 1:00.27 | 0.526 |