| POS | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|
| 1 | Yuriy Borzakovskiy |  RUS | 1:45.31 Q | 
| 2 | Wilson Kipketer |  DEN | 1:45.50 Q | 
| 3 | Justus Koech |  KEN | 1:46.04 q | 
| 4 | Osmar dos Santos |  BRA | 1:46.07 q | 
| 5 | Khalid Tighazouine |  MAR | 1:46.83 | 
| 6 | Mohammed Obaid Al-Salhi |  KSA | 1:47.25 | 
| 7 | João Pires |  POR | 1:49.19 | 
| 8 | Khadevis Robinson |  USA | 1:50.60 | 
| Nicholas Wachira |  KEN | DNF | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 50.81 |  Osmar DOS SANTOS |  BRA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 1146 | Mbulaeni Mulaudzi |  RSA | 1:46.31 Q | 
| 2 | 18 | Djabir Saïd-Guerni |  ALG | 1:46.36 Q | 
| 3 | 422 | Berhanu Alemu |  ETH | 1:46.40 | 
| 4 | 996 | Bram SOM |  NED | 1:46.63 | 
| 5 | 1265 | André Bucher |  SUI | 1:46.67 | 
| 6 | 482 | Florent Lacasse |  FRA | 1:46.89 | 
| 7 | 59 | Kris McCarthy |  AUS | 1:47.64 | 
| 8 | 657 | Ehsan Mohajershojaei |  IRI | 1:47.71 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 53.12 |  André BUCHER |  SUI | 
| POS | BIB | ATHLETE | COUNTRY | MARK | 
|---|---|---|---|---|
| 1 | 717 | Andrea Longo |  ITA | 1:46.26 Q | 
| 2 | 1150 | Hezekiél Sepeng |  RSA | 1:46.43 Q | 
| 3 | 402 | Antonio Manuel Reina |  ESP | 1:46.72 | 
| 4 | 106 | Joeri Jansen |  BEL | 1:46.78 | 
| 5 | 571 | René Herms |  GER | 1:46.88 | 
| 6 | 1410 | David Krummenacker |  USA | 1:47.25 | 
| 7 | 801 | Japheth Kimutai |  KEN | 1:47.53 | 
| 8 | 155 | Glody Dube |  BOT | 1:48.69 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 400m | 52.72 |  David KRUMMENACKER |  USA |