| Final 17:40 Wind -0.2m/s | Team | time | | L | React. | Bib | | 1. Rosangela Santos | BRA | 11.22s | PB | 4 | 0.185 | 53 | | 2. Barbara Pierre | USA | 11.25s | | 5 | 0.146 | 273 | | 3. Shakera Reece | BAR | 11.26s | PB | 3 | 0.194 | 16 | | 4. Ana Claudia Lemos Da Silva | BRA | 11.35s | | 8 | 0.171 | 43 | | 5. Mariely Sanchez Hichez | DOM | 11.49s | PB | 2 | 0.141 | 139 | | 6. Yomara Hinestroza | COL | 11.50s | | 6 | 0.159 | 83 | | 7. Nelkis Teresa Casabona | CUB | 11.56s | | 7 | 0.145 | 104 | | 8. Laverne Janet Jones | ISV | 11.60s | | 1 | 0.155 | 163 |
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| World Record: | | Florence Griffith Joyner (USA) 10.49s | | Indianapolis (USA) 16.07.1988 | | Panamerican Record: | | Mikele Barber (USA) 11.02s | | Rio de Janeiro (BRA) 24.07.2007 |
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| Heats. Monday 24.10. First 2 and Best 2 progress. |
| Heat 1 17:30 Wind +0.5m/s | Team | time | | L | React. | Bib | | 1. Rosangela Santos | BRA | 11.26s | PB | 7 | 0.167 | 53 | | 2. Yomara Hinestroza | COL | 11.41s | | 4 | 0.175 | 83 | | 3. Laverne Janet Jones | ISV | 11.45s | | 6 | 0.184 | 163 | | 4. Daniela Claudia Pavez | CHI | 11.85s | | 3 | 0.160 | 73 | | 5. Ramona Van Der Vloot | SUR | 12.01s | PB | 8 | 0.208 | 236 | | 6. Charnelle Enriquez | BIZ | 13.15s | | 2 | 0.197 | 18 | | -. Fany Santa Chalas Frias | DOM | DNS | | 5 | | 133 |
| Heat 2 17:37 Wind -1.7m/s | Team | time | | L | React. | Bib | | 1. Barbara Pierre | USA | 11.37s | | 5 | 0.162 | 273 | | 2. Nelkis Teresa Casabona | CUB | 11.56s | | 3 | 0.149 | 104 | | 3. Mariely Sanchez Hichez | DOM | 11.57s | PB | 4 | 0.222 | 139 | | 4. Courtney Cerene Patterson | ISV | 11.59s | | 7 | 0.156 | 165 | | 5. Tameka Williams | SKN | 11.68s | | 8 | 0.162 | 235 | | 6. Matilde Alvarez | MEX | 13.25s | | 6 | 0.181 | 183 |
| Heat 3 17:44 Wind -2.0m/s | Team | time | | L | React. | Bib | | 1. Shakera Reece | BAR | 11.43s | PB | 8 | 0.191 | 16 | | 2. Ana Claudia Lemos Da Silva | BRA | 11.46s | | 3 | 0.169 | 43 | | 3. Kenyanna` Wilson | USA | 11.74s | | 4 | 0.158 | 281 | | 4. Eliecith Palacios | COL | 11.77s | | 6 | 0.222 | 93 | | 5. Jessica Lynn Sanchez | MEX | 11.80s | PB | 7 | 0.179 | 200 | | 6. Kerri-Ann Mitchell | CAN | 11.81s | | 5 | 0.147 | 65 |
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