| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Michael Franks |  USA | 45.57 | |
| 2 | Philip Brown |  GBR | 45.80 | |
| 3 | Thomas Schönlebe |  GDR | 45.86 | |
| 4 | Martin Weppler |  FRG | 46.12 | |
| 5 | Gary Minihan |  AUS | 46.32 | |
| 6 | Mike Okot |  UGA | 46.38 | |
| 7 | Christopher Madzokere |  ZIM | 46.74 | |
| Dušan Malovec |  TCH | DNF | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Bert Cameron |  JAM | 45.76 | |
| 2 | Darren Clark |  AUS | 45.84 | |
| 3 | Erwin Skamrahl |  FRG | 45.90 | |
| 4 | Gerson A. Souza |  BRA | 45.94 | |
| 5 | Gabriel Tiacoh |  CIV | 46.22 | |
| 6 | Eliot Tabron |  USA | 46.54 | |
| 7 | Isidro Del Prado |  PHI | 46.71 | |
| 8 | Matti Rusanen |  FIN | 47.69 | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Hartmut Weber |  FRG | 46.01 | |
| 2 | Moses Kyeswa |  UGA | 46.31 | |
| 3 | Michael Paul |  TTO | 46.44 | |
| 4 | Douglas Hinds |  CAN | 46.62 | |
| 5 | Susumu Takano |  JPN | 47.06 | |
| 6 | James Atuti |  KEN | 47.59 | |
| 7 | Oddur Sigurdsson |  ISL | 48.09 | |
| Marcel Arnold |  SUI | DNS | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Viktor Markin |  URS | 46.16 | |
| 2 | Sunder Nix |  USA | 46.19 | |
| 3 | Ján Tomko |  TCH | 46.24 | |
| 4 | Todd Bennett |  GBR | 46.39 | |
| 5 | Héctor Daley |  PAN | 46.42 | |
| 6 | Eric Josjö |  SWE | 46.97 | |
| 7 | Sándor Vasvári |  HUN | 47.34 | |
| Hassan El Kashief |  SUD | DNF |