| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 36 | Osmar dos Santos |  BRA | 1:47.67 Q | 
| 2 | 23 | Joeri Jansen |  BEL | 1:48.10 Q | 
| 3 | 430 | Michael Stember |  USA | 1:48.66 q | 
| 4 | 100 | Juan de Dios Jurado |  ESP | 1:48.70 q SB | 
| 5 | 379 | Roman Hanzel |  SVK | 1:51.54 | 
| 6 | 269 | Kondwani Chiwina |  MAW | 1:54.49 PB | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 51.50 |  Osmar DOS SANTOS |  BRA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 106 | Antonio Manuel Reina |  ESP | 1:49.72 Q | 
| 2 | 328 | Mbulaeni Mulaudzi |  RSA | 1:49.83 Q | 
| 3 | 330 | Dmitriy Bogdanov |  RUS | 1:50.21 | 
| 4 | 380 | Rizak Dirshe |  SWE | 1:50.89 | 
| 5 | 395 | Paskar Owor |  UGA | 1:51.41 SB | 
| 6 | 251 | Abubaker El Gatroni |  LBA | 1:52.64 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 55.16 |  Rizak DIRSHE |  SWE | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 244 | Joseph Mwengi Mutua |  KEN | 1:47.86 Q | 
| 2 | 284 | Arnoud Okken |  NED | 1:47.88 Q SB | 
| 3 | 267 | Amine Laalou |  MAR | 1:48.03 q | 
| 4 | 426 | Derrick Peterson |  USA | 1:50.05 | 
| 5 | 204 | Sajad Moradi |  IRI | 1:50.06 | 
| 372 | Ismail Ahmed Ismail |  SUD | DNF | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 53.43 |  Joseph Mwengi MUTUA |  KEN | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 43 | Rashid Ramzi |  BRN | 1:48.25 Q | 
| 2 | 287 | Bram SOM |  NED | 1:48.55 Q | 
| 3 | 40 | Fabiano Peçanha |  BRA | 1:49.98 q SB | 
| 4 | 259 | David Fiegen |  LUX | 1:50.02 | 
| 5 | 249 | Mohammad Al-Azemi |  KUW | 1:51.80 SB | 
| 388 | Samwel Mwera |  TAN | DQ | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 54.02 |  Fabiano PEÇANHA |  BRA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 19 | Jean-Patrick Nduwimana |  BDI | 1:47.71 Q SB | 
| 2 | 24 | Tom Omey |  BEL | 1:48.92 Q | 
| 3 | 120 | Nicolas Aïssat |  FRA | 1:50.65 | 
| 4 | 301 | Abdel Salam Salem Al Dabaije |  PLE | 1:53.48 NR | 
| 114 | Berhanu Alemu |  ETH | DQ | |
| 54 | Gary Reed |  CAN | DNF | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 52.13 |  Gary REED |  CAN | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 128 | Florent Lacasse |  FRA | 1:48.01 Q | 
| 2 | 265 | Mouhssin Chehibi |  MAR | 1:48.44 Q | 
| 3 | 246 | William Yiampoy |  KEN | 1:48.49 q | 
| 4 | 42 | Yusuf Saad KAMEL |  BRN | 1:48.55 q | 
| 5 | 5 | Avetik Arakelian |  ARM | 1:53.44 SB | 
| 6 | 391 | Nazar Begliyev |  TKM | 1:54.72 SB | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 53.59 |  Yusuf Saad KAMEL |  BRN |