| Final 19:30 | Team | time | L | | 1. Ana Claudia Silva | BRA | 11.33s | 6 | | 2. Yomara Hinestroza | COL | 11.63s | 5 | | 3. Nelcy Caicedo | COL | 11.70s | 3 | | 4. Ericka Belinda Chavez Quinteros | ECU | 11.80s | 8 | | 5. Franciela Krasucki | BRA | 12.27s | 4 | | 6. Constanza Eckhardt | ARG | 12.32s | 1 | | 7. Paola Mautino Ruiz | PER | 12.35s | 7 | | 8. Macarena Borie Giralda | CHI | 12.37s | 2 |
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| Heat 1 11:50 | Team | time | L | | 1. Ana Claudia Silva | BRA | 11.17s | 7 | | 2. Nelcy Caicedo | COL | 11.53s | 6 | | 3. Ericka Belinda Chavez Quinteros | ECU | 11.64s | 5 | | 4. Macarena Borie Giralda | CHI | 12.21s | 4 | | 5. Constanza Eckhardt | ARG | 12.36s | 3 |
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| Heat 2 12:00 | Team | time | L | | 1. Yomara Hinestroza | COL | 11.64s | 5 | | 2. Franciela Krasucki | BRA | 12.00s | 4 | | 3. Paola Mautino Ruiz | PER | 12.23s | 3 | | 4. Anneliese Renate Grosser Villar | CHI | 12.40s | 2 |
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