Final | time | | 1. Paul Ereng | KEN | 1:44.84 | WR | 2. José Luis Barbosa | BRA | 1:45.55 | | 3. Tonino Viali | ITA | 1:46.95 | | 4. Stanley Redwine | USA | 1:47.54 | | 5. Ray Brown | USA | 1:47.93 | | 6. Ikem Billy | GBR | 1:48.97 | |
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| First 3 advanced to Final |
Semi 1 | time | | 1. Tonino Viali | ITA | 1:49.06 | Q | 2. Ikem Billy | GBR | 1:49.28 | Q | 3. Stanley Redwine | USA | 1:49.57 | Q | 4. Rob Druppers | NED | 1:49.70 | | 5. Joachim Heydgen | FRG | 1:49.71 | | -. Pablo Squella | CHI | DNS | |
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Semi 2 | time | | 1. José Luis Barbosa | BRA | 1:46.79 | Q | 2. Paul Ereng | KEN | 1:47.11 | Q | 3. Ray Brown | USA | 1:47.24 | Q | 4. Andrey Sudnik | URS | 1:49.01 | | 5. Steven Heard | GBR | 1:50.75 | | 6. William Wuyke | VEN | 1:53.52 | |
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Heat 1 | time | | 1. José Luis Barbosa | BRA | 1:49.55 | Q | 2. Joachim Heydgen | FRG | 1:49.70 | q | 3. Steven Heard | GBR | 1:49.71 | q | 4. Tomas de Teresa | ESP | 1:50.19 | |
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Heat 2 | time | | 1. Ikem Billy | GBR | 1:49.49 | Q | 2. Feranswa Woldemarian | ETH | 1:49.74 | | 3. Markus Trinkler | SUI | 1:49.79 | | 4. Claude Diomar | FRA | 1:50.20 | | 5. Lardou | MAR | 1:51.49 | | 6. Bobby Gaseitsiwe | BOT | 1:53.72 | |
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Heat 3 | time | | 1. Paul Ereng | KEN | 1:47.99 | Q | 2. Rob Druppers | NED | 1:48.29 | q | 3. Pablo Squella | CHI | 1:48.77 | q | 4. Stanley Redwine | USA | 1:49.04 | q | 5. Simon Hoogewerf | CAN | 1:49.98 | | 6. Luis A. Migueles | ARG | 1:51.58 | |
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Heat 4 | time | | 1. Tonino Viali | ITA | 1:48.45 | Q | 2. Andrey Sudnik | URS | 1:48.54 | q | 3. Ray Brown | USA | 1:48.62 | q | 4. William Wuyke | VEN | 1:48.97 | q | 5. Hamid Sadjadi | IRI | 1:51.21 | |
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