| Final | Team | time | L | React. | | 1. Amantle Montsho | BOT | 50.10s | 6 | 0.247 | | 2. Aliann Pompey | GUY | 51.65s | 5 | 0.357 | | 3. Christine Amertil | BAH | 51.96s | 4 | 0.222 | | 4. Lee Mcconnell | SCO | 52.36s | 9 | 0.346 | | 5. Mandeep Kaur | IND | 52.37s | 3 | 0.335 | | 6. Carline Muir | CAN | 52.43s | 8 | 0.301 | | 7. Magaret Etim | NGR | 52.66s | 2 | 0.261 | | DQ. Folashade Abugan | NGR | 51.39s | 7 | 0.253 |
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| Semifinals - First 2 + Best 2 |
| Semi 1 | Team | time | L | React. | | 1. Amantle Montsho | BOT | 50.80s | 4 | 0.230 | | 2. Aliann Pompey | GUY | 51.70s | 5 | 0.230 | | 3. Nadine Okyere | ENG | 52.89s | 7 | 0.303 | | 4. Chandrika Rasnayake | SRI | 52.97s | 8 | 0.278 | | 5. Racheal Nachula | ZAM | 53.44s | 6 | 0.207 | | 6. Trish Bartholomew | GRN | 54.15s | 2 | 0.182 | | 7. Davita Prendagast | JAM | 55.09s | 9 | 0.296 | | 8. Elisa Cossa | MOZ | 55.71s | 3 | 0.211 |
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| Semi 2 | Team | time | L | React. | | 1. Christine Amertil | BAH | 51.94s | 6 | 0.208 | | 2. Lee Mcconnell | SCO | 52.27s | 5 | 0.263 | | 3. Magaret Etim | NGR | 52.55s | 7 | 0.223 | | 4. Mandeep Kaur | IND | 52.60s | 4 | 0.331 | | 5. Kelly Massey | ENG | 53.24s | 8 | 0.208 | | 6. Amonn Nelson | CAN | 53.33s | 9 | 0.269 | | 7. Emilly Naziri | UGA | 54.94s | 2 | 0.197 | | 8. Joanna Mills | NIR | 55.68s | 3 | 0.170 |
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| Semi 3 | Team | time | L | React. | | 1. Folashade Abugan | NGR | 51.78s | 6 | 0.262 | | 2. Carline Muir | CAN | 52.55s | 7 | 0.219 | | 3. Manjeet Kaur | IND | 53.04s | 4 | 0.306 | | 4. Victoria Barr | ENG | 53.51s | 8 | 0.183 | | 5. Kgalalelo Sefo | BOT | 54.21s | 5 | 0.246 | | 6. Dominique Blake | JAM | 54.34s | 9 | 0.241 | | 7. Betty Burua | PNG | 54.48s | 2 | 0.266 | | 8. Grace Kidake | KEN | 55.15s | 3 | 0.518 |
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| Heat 1 | Team | time | L | React. | | 1. Christine Amertil | BAH | 52.08s | 5 | 0.223 | | 2. Carline Muir | CAN | 52.21s | 2 | 0.216 | | 3. Mandeep Kaur | IND | 52.48s | 7 | 0.339 | | 4. Kelly Massey | ENG | 53.90s | 6 | 0.216 | | 5. Cathrine Musiko | KEN | 55.75s | 4 | 0.240 | | 6. Mahriam Kamara | SLE | 1:03.11 | 3 | 0.311 |
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| Heat 2 | Team | time | L | React. | | 1. Amantle Montsho | BOT | 51.56s | 7 | 0.264 | | 2. Aliann Pompey | GUY | 52.33s | 3 | 0.324 | | 3. Racheal Nachula | ZAM | 52.89s | 6 | 0.220 | | 4. Davita Prendagast | JAM | 54.58s | 4 | 0.310 | | 5. Grace Kidake | KEN | 54.74s | 5 | | | 6. Justine Bayigga | UGA | 56.11s | 8 | 0.211 |
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| Heat 3 | Team | time | L | React. | | 1. Folashade Abugan | NGR | 52.41s | 5 | 0.273 | | 2. Kgalalelo Sefo | BOT | 54.12s | 4 | 0.240 | | 3. Dominique Blake | JAM | 54.29s | 7 | 0.248 | | 4. Trish Bartholomew | GRN | 54.73s | 3 | 0.174 | | 5. Elisa Cossa | MOZ | 55.62s | 6 | 0.260 | | 6. Jo Patterson | NIR | 55.72s | 2 | 0.200 | | 7. Marie Lascar | MRI | 56.38s | 8 | 0.283 |
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| Heat 4 | Team | time | L | React. | | 1. Manjeet Kaur | IND | 52.75s | 3 | 0.269 | | 2. Magaret Etim | NGR | 52.81s | 7 | 0.213 | | 3. Chandrika Rasnayake | SRI | 53.01s | 2 | 0.213 | | 4. Victoria Barr | ENG | 53.86s | 6 | 0.168 | | 5. Betty Burua | PNG | 54.90s | 5 | 0.307 | | 6. Emilly Naziri | UGA | 55.21s | 4 | 0.234 | | 7. Katie Kirk | NIR | 55.68s | 8 | 0.326 |
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| Heat 5 | Team | time | L | React. | | 1. Lee Mcconnell | SCO | 53.24s | 8 | 0.289 | | 2. Nadine Okyere | ENG | 53.75s | 4 | 0.302 | | 3. Amonn Nelson | CAN | 54.26s | 2 | 0.187 | | 4. Joanna Mills | NIR | 55.46s | 3 | 0.197 | | 5. Dee-Ann Rogers | AIA | 59.16s | 5 | 0.194 | | 6. Mirfath Mirfath | MDV | 1:00.33 | 7 | 0.279 | | -. Nadia Cunningham | JAM | DNS | 8 | |
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