| Final 18:02 | Team | time | L | Rk. | | 1. Ana Carvalho | BRA | 32.66s | 3 | 3. | | 2. Alessandra Marchioro | BRA | 32.67s | 4 | 1. | | 3. Agustina De Giovanni | ARG | 33.24s | 5 | 2. | | 4. Malena Coschiza | ARG | 33.54s | 1 | 7. | | 5. Monica Lorena Alvarez Rincon | COL | 33.74s | 7 | 6. | | 6. Mercedes Toledo | VEN | 34.04s | 2 | 5. | | 7. Daniela Victoria | VEN | 34.07s | 6 | 4. | | 8. Ashley Bransford | ARU | 35.74s | 8 | 8. |
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| Heats - Friday 26.03 10:06 |
| Heat 1 | Team | time | L | Rk. | | 1. Mercedes Toledo | VEN | 33.92s | 3 | 5. | | 2. Monica Lorena Alvarez Rincon | COL | 33.96s | 4 | 6. | | 3. Malena Coschiza | ARG | 33.99s | 5 | 7. | | 4. Patricia Mariana Quevedo San Martin | PER | 37.07s | 2 | 13. | | 5. Carla Silvana Bastidas Torres | ECU | 37.51s | 6 | 14. |
| Heat 2 | Team | time | L | Rk. | | 1. Ana Carvalho | BRA | 33.26s | 4 | 3. | | 2. Daniela Victoria | VEN | 33.65s | 5 | 4. | | 3. Ashley Bransford | ARU | 34.92s | 3 | 8. | | 4. Raysa Malu Gonzales Ruiz | PER | 36.05s | 2 | 10. | | 5. Nilshaira Isenia | AHO | 36.49s | 6 | 11. | | 6. Silvana Andrea Paniagua Valenzuela | PAR | 38.60s | 7 | 16. |
| Heat 3 | Team | time | L | Rk. | | 1. Alessandra Marchioro | BRA | 32.26s | 4 | 1. | | 2. Agustina De Giovanni | ARG | 32.82s | 5 | 2. | | 3. Laura Catherine Galarza Ramirez | COL | 35.21s | 5 | 9. | | 4. Camila Isabel Najera | ECU | 36.89s | 6 | 12. | | 5. Lujan Amarilla Vargas | PAR | 37.88s | 7 | 15. | | -. Mariana Zavalla Carbo Vaca Diez | BOL | DNS | 2 | |
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