| Final 20.25h | time | L | | 1. Michael Johnson |  USA | 43.84s | 6 | | 2. Alvin Harrison | USA | 44.40s | 4 | | 3. Gregory Haughton |  JAM | 44.70s | 8 | | 4. Sanderlei Claro Parrela |  BRA | 45.01s | 2 | | 5. Robert Mackowiak |  POL | 45.14s | 1 | | 6. Hendrik Mokganyetsi |  RSA | 45.26s | 7 | | 7. Antonio Pettigrew | USA | 45.42s | 5 | | 8. Danny McFarlane | JAM | 45.55s | 3 |
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| Heat 1 21.00h | time | L | | 1. Alvin Harrison | USA | 44.53s | 6 | | 2. Michael Johnson | USA | 44.65s | 5 | | 3. Gregory Haughton | JAM | 44.93s | 3 | | 4. Sanderlei Claro Parrela | BRA | 45.17s | 2 | | 5. Avard Moncur |  BAH | 45.18s | 8 | | 6. Piotr Haczek | POL | 45.66s | 4 | | 7. Patrick Dwyer |  AUS | 45.70s | 1 | | 8. Hamdan O. Al-Bishi |  KSA | 45.98s | 7 |
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| Heat 2 21.07h | time | L | | 1. Antonio Pettigrew | USA | 45.24s | 4 | | 2. Danny McFarlane | JAM | 45.38s | 7 | | 3. Hendrik Mokganyetsi | RSA | 45.52s | 5 | | 4. Robert Mackowiak | POL | 45.53s | 6 | | 5. Daniel Caines |  GBR | 45.55s | 8 | | 6. Casey Vincent | AUS | 45.61s | 2 | | 7. Alessandro Attene |  ITA | 46.41s | 1 | | -. Davian Clarke | JAM | DNF | 3 |
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| Heat 1 21.25h | time | L | | 1. Michael Johnson | USA | 45.31s | 4 | | 2. Piotr Haczek | POL | 45.43s | 1 | | 3. Avard Moncur | BAH | 45.43s | 5 | | 4. Casey Vincent | AUS | 45.45s | 8 | | 5. Eric Milazar |  MRI | 45.52s | 7 | | 6. Sugath Tillakeratne |  SRI | 45.54s | 6 | | 7. David Canal |  ESP | 45.54s | 3 | | 8. Arnaud Malherbe | RSA | 45.59s | 2 |
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| Heat 2 21.32h | time | L | | 1. Davian Clarke | JAM | 45.06s | 3 | | 2. Antonio Pettigrew | USA | 45.35s | 4 | | 3. Hamdan O. Al-Bishi | KSA | 45.35s | 6 | | 4. Danny McFarlane | JAM | 45.40s | 8 | | 5. Ibrahima Wade |  FRA | 45.61s | 7 | | 6. Davis Kamoga |  UGA | 45.74s | 2 | | 7. David Kirui |  KEN | 46.00s | 5 | | 8. Jun Osakada |  JPN | 46.15s | 1 |
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| Heat 3 21.39h | time | L | | 1. Alvin Harrison | USA | 44.25s | 6 | | 2. Gregory Haughton | JAM | 45.08s | 4 | | 3. Alessandro Attene | ITA | 45.35s | 7 | | 4. Patrick Dwyer | AUS | 45.38s | 8 | | 5. Dmitriy Golovastov |  RUS | 45.66s | 1 | | 6. Chris Brown | BAH | 45.76s | 5 | | 7. Sofiane Labidi |  TUN | 46.01s | 2 | | 8. Jude Monye |  NGR | 46.32s | 3 |
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| Heat 4 21.46h | time | L | | 1. Robert Mackowiak | POL | 45.01s | 7 | | 2. Hendrik Mokganyetsi | RSA | 45.15s | 4 | | 3. Daniel Caines | GBR | 45.37s | 5 | | 4. Sanderlei Claro Parrela | BRA | 45.55s | 3 | | 5. Marc Raquil | FRA | 45.56s | 2 | | 6. Alejandro Cardenas |  MEX | 45.66s | 1 | | 7. Sunday Bada | NGR | 45.83s | 8 | | 8. Ibrahim Ismail |  QAT | 45.96s | 6 |
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| Heat 1 10.40h | time | L | | 1. Avard Moncur | BAH | 45.23s | 1 | | 2. Daniel Caines | GBR | 45.39s | 7 | | 3. Casey Vincent | AUS | 45.49s | 5 | | 4. Dmitriy Golovastov | RUS | 45.90s | 3 | | 5. Takahiko Yamamura | JPN | 46.25s | 2 | | 6. Carlos Santa |  DOM | 46.40s | 4 | | 7. Piotr Rysiukiewicz | POL | 46.67s | 8 | | 8. Gerald Clervil |  HAI | 46.69s | 6 |
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| Heat 2 10.45h | time | L | | 1. Jude Monye | NGR | 45.79s | 8 | | 2. Patrick Dwyer | AUS | 45.82s | 1 | | 3. Alejandro Cardenas | MEX | 46.14s | 5 | | 4. Neil De Silva |  TRI | 46.84s | 2 | | 5. Gustavo Aguirre |  ARG | 47.03s | 3 | | 6. Troy McIntosh | BAH | 47.06s | 6 | | -. Jonas Motiejunas |  LTU | DNF | 7 | | -. Kennedy Ochieng | KEN | DNF | 4 |
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| Heat 3 10.50h | time | L | | 1. Sanderlei Claro Parrela | BRA | 45.55s | 4 | | 2. Danny McFarlane | JAM | 45.84s | 5 | | 3. Sofiane Labidi | TUN | 45.84s | 3 | | 4. Jun Osakada | JPN | 45.88s | 6 | | 5. Tawanda Chiwira |  ZIM | 46.50s | 1 | | 6. Nduka Awazie | NGR | 46.81s | 7 | | 7. Johnson Kubisa |  BOT | 46.97s | 8 | | -. Evripides Demosthenous |  CYP | DNF | 2 |
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| Heat 4 10.55h | time | L | | 1. Gregory Haughton | JAM | 45.63s | 8 | | 2. David Kirui | KEN | 45.69s | 2 | | 3. Marc Raquil | FRA | 45.72s | 3 | | 4. Arnaud Malherbe | RSA | 45.73s | 7 | | 5. Sunday Bada | NGR | 45.75s | 6 | | 6. Ato Modibo | TRI | 45.91s | 5 | | 7. Benjamin Youla |  CGO | 47.54s | 4 | | 8. Ilya Dzhivondov |  BUL | 48.64s | 1 |
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| Heat 5 11.00h | time | L | | 1. Hendrik Mokganyetsi | RSA | 45.22s | 2 | | 2. Piotr Haczek | POL | 45.61s | 3 | | 3. Alessandro Attene | ITA | 45.79s | 7 | | 4. Rohan Pradeep Kumara | SRI | 46.00s | 4 | | 5. Safi BakarSalaheddine | QAT | 46.16s | 8 | | 6. Zsolt Szeglet |  HUN | 46.19s | 5 | | 7. Jamie Baulch | GBR | 46.52s | 6 |
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| Heat 6 11.05h | time | L | | 1. Alvin Harrison | USA | 44.96s | 6 | | 2. Davian Clarke | JAM | 45.30s | 5 | | 3. Robert Mackowiak | POL | 45.39s | 2 | | 4. Anastasios Gousis |  GRE | 46.38s | 3 | | 5. Fawzi AlShammari |  KUW | 46.38s | 7 | | 6. Paramjit Singh |  IND | 46.64s | 8 | | 7. Philip Mukomana | ZIM | 47.11s | 4 |
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| Heat 7 11.10h | time | L | | 1. Michael Johnson | USA | 45.25s | 5 | | 2. David Canal | ESP | 45.53s | 2 | | 3. Ibrahima Wade | FRA | 45.72s | 3 | | 4. Malik-Khaled Louahla |  ALG | 46.06s | 7 | | 5. Sean Baldock | GBR | 46.45s | 4 | | 6. Fabian Rollins |  BAR | 46.85s | 8 | | 7. Aleksandr Kaydash |  UKR | 46.88s | 6 |
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| Heat 8 11.15h | time | L | | 1. Hamdan O. Al-Bishi | KSA | 45.22s | 4 | | 2. Sugath Tillakeratne | SRI | 45.48s | 2 | | 3. Ibrahim Ismail | QAT | 45.48s | 1 | | 4. Eric Milazar | MRI | 45.66s | 5 | | 5. Stefan Balosak |  SVK | 46.42s | 3 | | 6. Kenji Tabata | JPN | 46.59s | 7 | | 7. Rudieon Sylvan |  GRN | 48.17s | 8 | | 8. Bashir Mohamed Al Khewani |  YEM | 49.72s | 6 |
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| Heat 9 11.20h | time | L | | 1. Antonio Pettigrew | USA | 45.62s | 3 | | 2. Chris Brown | BAH | 45.80s | 4 | | 3. Davis Kamoga | UGA | 45.92s | 6 | | 4. Matija Sestak |  SLO | 45.95s | 7 | | 5. Tomas Coman |  IRL | 46.17s | 5 | | 6. Juan Pedro Toledo | MEX | s | 2 | | -. Daniel Batman | AUS | DNF | 8 |
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