| Final | time |   | L | React. | bib |  | 1. S. Mcpherson |  JAM | 50.67s |   | 3 | 0.156s | 1684 |  | 2. N. Williams-mills |  JAM | 50.86s |   | 5 | 0.260s | 1712 |  | 3. C. Day |  JAM | 51.09s |   | 4 | 0.172s | 1657 |  | 4. A. Montsho |  BOT | 51.10s |   | 6 | 0.212s | 1221 |  | 5. F. Abugan |  NGR | 52.33s |   | 2 | 0.209s | 1934 |  | 6. K. Alexander |  SVG | 52.78s |   | 1 | 0.183s | 2290 |  | 7. S. Miller |  BAH | 53.08s |   | 7 | 0.159s | 1158 |  | 8. K. Massey |  ENG | 53.08s |   | 8 | 0.166s | 1424 |   
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|   |  | First 2 and Best 2 progressed to Final. |   
| Semi 1 | time |   | L | React | bib |  | 1. S. Mcpherson |  JAM | 50.69s |   | 5 | 0.158s | 1684 |  | 2. K. Massey |  ENG | 52.19s | PB | 7 | 0.169s | 1424 |  | 3. O. Omotosho |  NGR | 52.34s |   | 6 | 0.200s | 1984 |  | 4. Rasnayaka Mudiyans |  SRI | 52.67s | SB | 3 | 0.172s | 2282 |  | 5. P. Machettira |  IND | 52.88s |   | 8 | 0.153s | 1602 |  | 6. K. Mupopo |  ZAM | 53.09s |   | 4 | 0.219s | 2454 |  | 7. A. Jean-baptiste |  CAN | 53.61s |   | 1 | 0.144s | 1249 |  | 8. A. Kelly |  IVB | 54.35s |   | 2 | 0.185s | 1637 |   
| Semi 2 | time |   | L | React | bib |  | 1. C. Day |  JAM | 51.02s |   | 6 | 0.217s | 1657 |  | 2. S. Miller |  BAH | 51.58s |   | 3 | 0.156s | 1158 |  | 3. F. Abugan |  NGR | 51.71s | SB | 4 | 0.200s | 1934 |  | 4. K. Alexander |  SVG | 52.12s |   | 5 | 0.188s | 2290 |  | 5. S. Cox |  ENG | 52.57s |   | 8 | 0.176s | 1381 |  | 6. M. Mitchell |  AUS | 53.37s |   | 7 | 0.176s | 1083 |  | 7. S. Fermin |  TTO | 53.83s | SB | 1 | 0.202s | 2362 |  | 8. K. Beckles |  GRN | 55.18s |   | 2 | 0.280s | 1565 |   
| Semi 3 | time |   | L | React | bib |  | 1. N. Williams-Mills |  JAM | 50.73s |   | 6 | 0.372s | 1712 |  | 2. A. Montsho |  BOT | 50.96s |   | 5 | 0.261s | 1221 |  | 3. M. Adeoye |  ENG | 52.48s | SB | 3 | 0.180s | 1359 |  | 4. A. Rubie |  AUS | 52.55s |   | 1 | 0.162s | 1110 |  | 5. M. Maiyo |  KEN | 52.97s |   | 7 | 0.165s | 1764 |  | 6. R. George |  NGR | 53.48s |   | 4 | 0.170s | 1960 |  | 7. L. Shida |  UGA | 54.30s |   | 2 | 0.268s | 2406 |  | 8. D. Williams |  TTO | 54.63s |   | 8 | 0.177s | 2384 |   
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| Heat 1 | time | L | React |   |  | 1. Chandrika Subashini |  SRI | 53.75s | 8 | 0.173 |   |  | 2. Regina George |  NGR | 53.92s | 5 | 0.181 |   |  | 3. Poovamma Machettira |  IND | 54.01s | 7 | 0.178 |   |  | 4. Wendy Dorr |  CAN | 55.33s | 2 | 0.221 |   |  | 5. Betty Burua |  PNG | 55.48s | 6 | 0.199 |   |  | 6. Samantha Edwards |  ANT | 55.57s | 3 | 0.167 |   |  | 7. Rhodah Njobvu |  ZAM | 57.47s | 4 | 0.183 |   |  | 8. Emilly Nanziri |  UGA | 59.02s | 1 | 0.203 |   |   
| Heat 2 | time | L | React |   |  | 1. Christine Day |  JAM | 52.25s | 4 | 0.193 |   |  | 2. Shaunae Miller |  BAH | 52.34s | 3 | 0.171 |   |  | 3. Kelly Massey |  ENG | 52.34s | 5 | 0.153 |   |  | 4. Anneliese Rubie |  AUS | 52.86s | 2 | 0.155 |   |  | 5. Shawna Fermin |  TRI | 54.10s | 7 | 0.215 |   |  | 6. Jacinter Shikanda |  KEN | 54.81s | 6 | 0.194 |   |  | 7. Shirley Vunatup |  PNG | 1:00.10s | 8 | 0.213 |   |   
| Heat 3 | time | L | React |   |  | 1. Kineke Alexander |  SVG | 52.98s | 4 | 0.182 |   |  | 2. Kabange Mupopo |  ZAM | 53.18s | 2 | 0.195 |   |  | 3. Maureen Jelagat Maiyo |  KEN | 53.21s | 8 | 0.177 |   |  | 4. Ashley Kelly |  IVB | 54.26s | 7 | 0.174 |   |  | 5. Vivian Mills |  GHA | 55.19s | 5 | 0.164 |   |  | 6. Phumille Ndzinisa |  SWZ | 56.38s | 6 | 0.177 |   |  | 7. Mariatu Suma |  SLE | 57.15s | 3 | 0.226 |   |  | 8. Halimah Nakaayi |  UGA | 57.51s | 1 | 0.184 |   |   
| Heat 4 | time | L | React |   |  | 1. Stephenie Ann Mcpherson |  JAM | 52.25s | 8 | 0.156 |   |  | 2. Omolara Omotosho |  NGR | 53.02s | 5 | 0.173 |   |  | 3. Domonique Williams |  TRI | 54.43s | 3 | 0.211 |   |  | 4. Kanika Beckles |  GRN | 54.67s | 2 | 0.180 |   |  | 5. Shawkia Iddrisu |  GHA | 55.74s | 6 | 0.161 |   |  | 6. Harriet Pryke |  IOM | 56.15s | 7 | 0.176 |   |  | 7. Donna Koniel |  PNG | 58.40s | 4 | 0.244 |   |   
| Heat 5 | time | L | React |   |  | 1. Amantle Montsho |  BOT | 51.88s | 2 | 0.199 |   |  | 2. Folashade Abugan |  NGR | 52.84s | 5 | 0.368 |   |  | 3. Shana Cox |  ENG | 53.00s | 3 | 0.188 |   |  | 4. Audrey Jean-Baptiste |  CAN | 54.15s | 7 | 0.157 |   |  | 5. Lanece Clarke |  BAH | 55.24s | 6 | 0.212 |   |  | -. Rebecca Ansumana |  SLE | DQ | 4 | 0.155 |   |  | -. Afia Charles |  ANT | DQ | 8 | 0.155 |   |   
| Heat 6 | time | L | React |   |  | 1. Novlene Williams-Mills |  JAM | 52.39s | 4 | 0.240 |   |  | 2. Margaret Adeoye |  ENG | 53.98s | 5 | 0.176 |   |  | 3. Morgan Mitchell |  AUS | 54.28s | 8 | 0.168 |   |  | 4. Leni Shida |  UGA | 54.77s | 2 | 0.338 |   |  | 5. Catherine Eke |  SLE | 54.80s | 7 | 0.214 |   |  | 6. Romona Modeste |  TRI | 55.16s | 3 | 0.172 |   |  | 7. Aurelie Alcindor |  MRI | 57.39s | 6 | 0.190 |   |   
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| Lane Heat 1 | PB | SB | bib |  | 1. E. Nanziri |  UGA |   | 54.37s | 2402 |  | 2. W. Dorr |  CAN |   | 52.51s | 1240 |  | 3. S. Edwards |  ANT | 53.46s | 52.15s | 1014 |  | 4. R. Njobvu |  ZAM | 55.42s | 55.42s | 2457 |  | 5. R. George |  NGR | 51.39s | 50.84s | 1960 |  | 6. B. Burua |  PNG | 55.48s | 53.19s | 2068 |  | 7. P. Machettira |  IND | 51.73s | 52.75s | 1602 |  | 8. Rasnayaka Mudiyans |  SRI | 53.49s | 52.36s | 2282 |   
| Lane Heat 2 | PB | SB | bib |  | 2. A. Rubie |  AUS | 52.35s | 52.35s | 1110 |  | 3. S. Miller |  BAH |   | 50.70s | 1158 |  | 4. C. Day |  JAM | 50.16s | 50.16s | 1657 |  | 5. K. Massey |  ENG | 52.29s | 52.29s | 1424 |  | 6. J. Shikanda |  KEN | 53.91s | 53.91s | 1791 |  | 7. S. Fermin |  TTO | 54.36s | 52.62s | 2362 |  | 8. S. Vunatup |  PNG | 58.21s | 58.21s | 2084 |   
| Lane Heat 3 | PB | SB | bib |  | 1. H. Nakaayi |  UGA |   | 54.75s | 2400 |  | 2. K. Mupopo |  ZAM |   |   | 2454 |  | 3. M. Suma |  SLE | 55.40s | 55.27s | 2257 |  | 4. K. Alexander |  SVG | 51.23s | 51.23s | 2290 |  | 5. V. Mills |  GHA | 53.04s | 53.04s | 1541 |  | 6. P. Ndzinisa |  SWZ | 55.70s | 53.77s | 2304 |  | 7. A. Kelly |  IVB | 53.54s | 52.71s | 1637 |  | 8. M. Maiyo |  KEN | 51.78s | 51.78s | 1764 |   
| Lane Heat 4 | PB | SB | bib |  | 2. K. Beckles |  GRN | 53.65s | 51.72s | 1565 |  | 3. D. Williams |  TTO | 52.95s | 52.95s | 2384 |  | 4. D. Koniel |  PNG | 56.17s | 56.17s | 2076 |  | 5. O. Omotosho |  NGR | 51.82s | 51.28s | 1984 |  | 6. S. Iddrisu |  GHA | 55.42s | 55.42s | 1537 |  | 7. H. Pryke |  IOM |   | 54.05s | 1629 |  | 8. S. Mcpherson |  JAM | 50.54s | 49.92s | 1684 |   
| Lane Heat 5 | PB | SB | bib |  | 2. A. Montsho |  BOT | 50.37s | 49.33s | 1221 |  | 3. S. Cox |  ENG | 54.44s | 50.84s | 1381 |  | 4. R. Ansumana |  SLE | 56.43s | 56.43s | 2250 |  | 5. F. Abugan |  NGR | 52.17s | 50.89s | 1934 |  | 6. L. Clarke |  BAH | 53.70s | 52.80s | 1144 |  | 7. A. Jean-baptiste |  CAN |   |   | 1249 |  | 8. A. Charles |  ANT | 52.77s | 52.49s | 1012 |   
| Lane Heat 6 | PB | SB | bib |  | 2. L. Shida |  UGA |   |   | 2406 |  | 3. R. Modeste |  TTO | 54.37s | 53.82s | 2371 |  | 4. N. Williams-mills |  JAM | 50.26s | 49.63s | 1712 |  | 5. M. Adeoye |  ENG | 52.72s | 51.93s | 1359 |  | 6. A. Alcindor |  MRI | 56.49s | 56.49s | 1893 |  | 7. C. Eke |  SLE | 53.86s | 52.37s | 2253 |  | 8. M. Mitchell |  AUS | 52.22s | 52.22s | 1083 |   
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