| Final | time | | L | &)bib | | 1. N. Amos |  BOT | 1:45.18 | | 5 | 1218 | | 2. D. Rudisha |  KEN | 1:45.48 | | 4 | 1789 | | 3. A. Olivier |  RSA | 1:46.03 | | 6 | 2103 | | 4. F. Rotich | KEN | 1:46.09 | | 7 | 1788 | | 5. J. Riseley |  AUS | 1:46.12 | | 3 | 1105 | | 6. G. Learmonth |  SCO | 1:46.69 | PB | 1 | 2165 | | 7. M. Rimmer |  ENG | 1:46.71 | | 2 | 1453 | | 8. R. Musagala |  UGA | 1:47.19 | | 9 | 2398 | | 9. E. Kipkorir | KEN | 1:47.34 | | 8 | 1753 |
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| | | First 3 and Best 2 progressed to Final. J. Riseley (AUS) repescated. |
| Semi 1 | time | | L | bib | | 1. D. Rudisha | KEN | 1:46.61s | | 3 | 1789 | | 2. F. Rotich | KEN | 1:46.88s | | 4 | 1788 | | 3. G. Learmonth | SCO | 1:47.78s | | 8 | 2165 | | 4. R. Cunningham |  JAM | 1:47.80s | | 1 | 1656 | | 5. J. Riseley | AUS | 1:47.82s | | 6 | 1105 | | 6. S. Dill |  BER | 1:48.59s | | 2 | 1197 | | 7. M. Mohammed | ENG | 1:51.91s | | 7 | 1431 | | -. B. Mcbride |  CAN | DQ | | 5 | 1255 |
| Semi 2 | time | | L | bib | | 1. N. Amos | BOT | 1:45.65s | | 6 | 1218 | | 2. R. Musagala | UGA | 1:45.98s | | 3 | 2398 | | 3. A. Olivier | RSA | 1:46.30s | | 4 | 2103 | | 4. E. Kipkorir | KEN | 1:47.35s | | 5 | 1753 | | 5. M. Rimmer | ENG | 1:47.70s | | 7 | 1453 | | 6. A. Mamba |  MOZ | 1:47.73s | | 2 | 1884 | | 7. J. Thomas |  WAL | 1:50.08s | | 8 | 2441 | | 8. A. Evans | BER | 1:50.17s | | 1 | 1198 |
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| Heat 1 | time | | L | bib | | 1. D. Rudisha | KEN | 1:46.89 | | 6 | 1789 | | 2. M. Rimmer | ENG | 1:47.64 | | 3 | 1453 | | 3. R. Cunningham | JAM | 1:47.71 | SB | 4 | 1656 | | 4. G. Learmonth | SCO | 1:47.85 | | 5 | 2165 | | 5. B. Mcbride | CAN | 1:49.29 | | 1 | 1255 | | 6. R. Bagina |  RWA | 1:55.31 | | 2 | 2121 | | 7. K. Kapmatana |  PNG | 1:59.09 | | 7 | 2074 |
| Heat 2 | time | | L | bib | | 1. A. Olivier | RSA | 1:47.93 | | 3 | 2103 | | 2. R. Musagala | UGA | 1:48.23 | | 2 | 2398 | | 3. A. Mamba | MOZ | 1:48.57 | | 1 | 1884 | | 4. M. Mohammed | ENG | 1:49.13 | | 4 | 1431 | | 5. S. Obinwa |  NGR | 1:50.59 | | 6 | 1970 | | 6. K. Bullard |  TTO | 1:51.57 | | 5 | 2352 |
| Heat 3 | time | | L | bib | | 1. J. Riseley | AUS | 1:48.63 | | 7 | 1105 | | 2. F. Rotich | KEN | 1:48.70 | | 6 | 1788 | | 3. J. Thomas | WAL | 1:49.38 | | 2 | 2441 | | 4. S. Dill | BER | 1:49.61 | | 1 | 1197 | | 5. K. Matlaun | PNG | 1:52.36 | PB | 3 | 2079 | | 6. A. Beddoes |  COK | 1:53.16 | NR | 4 | 1314 |
| Heat 4 | time | | L | bib | | 1. A. Evans | BER | 1:50.48 | | 3 | 1198 | | 2. N. Amos | BOT | 1:50.56 | | 5 | 1218 | | 3. E. Kipkorir | KEN | 1:50.88 | | 7 | 1753 | | 4. J. James | TTO | 1:51.62 | | 6 | 2367 | | 5. J. Ralph | AUS | 1:52.48 | | 1 | 1104 | | 6. E. Ntakiyimana | RWA | 1:55.61 | | 4 | 2128 | | 7. V. Babob | PNG | 2:03.45 | | 2 | 2066 |
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| Order Heat 1 | PB | SB | bib | | 1. B. Mcbride | CAN | 1:45.35 | 1:45.35 | 1255 | | 2. R. Bagina | RWA | 1:51.04 | 1:51.04 | 2121 | | 3. M. Rimmer | ENG | 1:45.89 | 1:43.89 | 1453 | | 4. R. Cunningham | JAM | 1:48.10 | 1:47.26 | 1656 | | 5. G. Learmonth | SCO | 1:46.85 | 1:46.85 | 2165 | | 6. D. Rudisha | KEN | 1:42.98 | 1:40.91 | 1789 | | 7. K. Kapmatana | PNG | 1:57.26 | 1:53.92 | 2074 |
| Order Heat 2 | PB | SB | bib | | 1. A. Mamba | MOZ | 1:48.16 | 1:48.16 | 1884 | | 2. R. Musagala | UGA | 1:45.27 | 1:45.27 | 2398 | | 3. A. Olivier | RSA | 1:44.42 | 1:44.29 | 2103 | | 4. M. Mohammed | ENG | 1:46.56 | 1:45.67 | 1431 | | 5. K. Bullard | TTO | 1:48.64 | 1:48.64 | 2352 | | 6. S. Obinwa | NGR | 1:46.68 | 1:46.68 | 1970 |
| Order Heat 3 | PB | SB | bib | | 1. S. Dill | BER | 1:48.09 | 1:47.76 | 1197 | | 2. J. Thomas | WAL | 1:47.03 | 1:46.20 | 2441 | | 3. K. Matlaun | PNG | 1:52.81 | 1:52.81 | 2079 | | 4. A. Beddoes | COK | 1:53.63 | 1:53.63 | 1314 | | 5. A. Osagie | ENG | 1:45.37 | 1:43.77 | 1441 | | 6. F. Rotich | KEN | 1:42.84 | 1:42.84 | 1788 | | 7. J. Riseley | AUS | 1:45.81 | 1:44.48 | 1105 |
| Order Heat 4 | PB | SB | bib | | 1. J. Ralph | AUS | 1:45.80 | 1:45.80 | 1104 | | 2. V. Babob | PNG | 1:55.69 | 1:55.69 | 2066 | | 3. A. Evans | BER | 1:47.15 | 1:46.26 | 1198 | | 4. E. Ntakiyimana | RWA | 1:52.90 | 1:52.90 | 2128 | | 5. N. Amos | BOT | 1:42.45 | 1:41.73 | 1218 | | 6. J. James | TTO | 1:47.06 | 1:46.57 | 2367 | | 7. E. Kipkorir | KEN | 1:45.50 | 1:45.50 | 1753 |
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