| Final Wind +0.8m/s | Team | time | | L | | 1. Mikele Barber | USA | 11.02s | GR | 4 | | 2. Mechelle Lewis | USA | 11.24s | | 3 | | 3. Chandra Sturrup | BAH | 11.29s | | 5 | | 4. Tahesia Harrigan | BVI | 11.34s | | 7 | | 5. Sherry Fletcher | GRE | 11.36s | | 6 | | 6. Virgil Hodge | SKN | 11.40s | | 1 | | 7. Laverne Jones | ISV | 11.49s | | 2 | | 8. Tracy-Ann Rowe | JAM | 11.56s | | 8 |
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| World Record: | | Florence Griffith Joyner (USA) 10.49s | | Indianapolis (USA) 16.07.1988 | | Panamerican Record: |
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| Semi-Finals - First 4 progress. |
| Semi 1. | Team | time | | L | | 1. Mikele Barber | USA | 11.18s | | | 4. Sherry Fletcher | GRE | 11.20s | | | 6. Laverne Jones | ISV | 11.32s | | | 7. Virgil Hodge | SKN | 11.33s | | | 8. Peta-Gaye Dowdie | JAM | 11.43s | | | 10.Virgen Benavides | CUB | 11.45s | | | 14.Ayanna Hutchinson | TRI | 11.77s | | | 15.Carol Rodriguez | PUR | 11.78s | |
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| Semi 2. | Team | time | | L | | 1. Mechelle Lewis | USA | 11.18s | | | 1. Chandra Sturrup | BAH | 11.18s | SB | | 5. Tahesia Harrigan | BVI | 11.28s | | | 9. Tracy-Ann Rowe | SKN | 11.44s | | | 11.Sasha Springer-Jones | TRI | 11.46s | | | 12.Lucimar de Moura | BRA | 11.60s | | | 13.Misleidys Lazo | CUB | 11.76s | | | 16.Jade Bailey | BAR | 11.79s | |
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| Heats - First 3 and Best 4 progress. |
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| Heat 4 | Team | time | | L | | 1. Mikele Barber | USA | 11.15s | Heat | 1. | | | 2. Chandra Sturrup | BAH | 11.15s | Heat | 1. | | | 3. Sherry Fletcher | GRE | 11.18s | Heat | 4. | PB | | 4. Tahesia Harrigan | BVI | 11.21s | Heat | 3. | | | 5. Virgen Benavides | CUB | 11.24s | Heat | 3. | | | 6. Mechelle Lewis | USA | 11.27s | Heat | 2. | | | 7. Laverne Jones | ISV | 11.28s | Heat | 3. | | | 8. Lucimar de Moura | BRA | 11.31s | Heat | 1. | | | 9. Virgil Hodge | SKN | 11.35s | Heat | 2. | | | 10.Tracy-Ann Rowe | JAM | 11.37s | Heat | 3. | | | 11.Sasha Springer-Jones | TRI | 11.50s | Heat | 2. | | | 12.Carol RodrÃguez | PUR | 11.53s | Heat | 4. | | | 13.Peta-Gaye Dowdie | JAM | 11.63s | Heat | 1. | | | 14.Misleidys Lazo | CUB | 11.67s | Heat | 4. | | | 15.Jade Bailey | BAR | 11.68s | Heat | 1. | | | 16.Ayanna Hutchinson | TRI | 11.70s | Heat | 3. | | | 17.Tamica Clarke | BAH | 11.72s | Heat | 4. | | | 18.Marleny Mejia | DOM | 11.76s | Heat | 4. | | | 19.Shakera Reece | BAR | 11.82s | Heat | 2. | | | 20.Luciana dos Santos | BRA | 11.82s | Heat | 2. | | | 21.Sonia Williams | ANT | 11.89s | Heat | 1. | | | 22.Maria Carolina Diaz | CHI | 12.05s | Heat | 1. | | | 23.Yessica Perea | ECU | 12.18s | Heat | 3. | | | 24.Kirsten Nieuwendam | SUR | 12.29s | Heat | 4. | | | 25.Tricia Flores | BIZ | 12.37s | Heat | 2. | | | 26. Cydonie Mothersill | CAY | 99.99 !s | Heat | 2. | DNS |
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