| Final 18:00 | Team | time | L | Rk. | | 1. Flavia Cazziolato | BRA | 25.37s | 4 | 1. | | 2. Arlene Semeco | VEN | 25.51s | 5 | 2. | | 3. Daynara Paula | BRA | 25.94s | 3 | 3. | | 4. Loren Yamile Bahamonde Cabello | ECU | 26.53s | 2 | 5. | | 5. Aixa Jazmin Triay | ARG | 26.65s | 6 | 4. | | 6. Isabella Arcila Hurtado | COL | 26.95s | 1 | 7. | | 7. Nadia Soledad Colovini | ARG | 27.20s | 7 | 6. | | 8. Ximena Vilar | VEN | 27.32s | 8 | 8. |
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| Heats - Monday 29.03 10:00 |
| Heat 1 | Team | time | L | Rk. | | 1. Flavia Cazziolato | BRA | 25.51s | 4 | 1. | | 2. Ximena Vilar | VEN | 27.04s | 5 | 8. | | 3. Maria Clara Quintero Sosa | COL | 27.40s | 3 | 11. | | 4. Raissa Andrea Guerra | URU | 28.07s | 6 | 12. | | 5. Maria Lopez Nery Huerta | PAR | 28.08s | 2 | 13. | | 6. Nilshaira Isenia | AHO | 28.63s | 7 | 15. |
| Heat 2 | Team | time | L | Rk. | | 1. Daynara Paula | BRA | 26.12s | 4 | 3. | | 2. Nadia Soledad Colovini | ARG | 26.94s | 5 | 6. | | 3. Isabella Arcila Hurtado | COL | 26.97s | 3 | 7. | | 4. Maria Graciela Wong Rosales | PER | 27.10s | 2 | 9. | | 5. Karen Milenka Torrez Guzman | BOL | 28.72s | 6 | 17. | | 6. Massie Milagros Carrillo Yong | PER | 29.25s | 7 | 19. | | 7. Maria Jose Lopez Quintanilla | BOL | 29.28s | 1 | 20. |
| Heat 3 | Team | time | L | Rk. | | 1. Arlene Semeco | VEN | 25.82s | 4 | 2. | | 2. Aixa Jazmin Triay | ARG | 26.34s | 3 | 4. | | 3. Loren Yamile Bahamonde Cabello | ECU | 26.84s | 5 | 5. | | 4. Chinyere Pigot | SUR | 27.15s | 6 | 10. | | 5. Chandel Domaso | SUR | 28.22s | 7 | 14. | | 6. Lujan Amarilla Vargas | PAR | 28.70s | 1 | 16. | | 7. Maria Sanchez | URU | 28.93s | 2 | 18. |
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