Final | Team | time | L | Rk. | 50m | 1. Arlene Semeco | VEN | 56.21s | 4 | 1. | 27.25s | 2. Tatiana Barbosa | BRA | 56.90s | 1 | 7. | 27.85s | 3. Nadia Soledad Colovini | ARG | 58.09s | 5 | 2. | 28.24s | 4. Aixa Jazmin Triay | ARG | 58.16s | 3 | 4. | 28.54s | 5. Ximena Vilar | VEN | 59.24s | 6 | 3. | 28.39s | 6. Carmen Gisella Cianci Maury | COL | 59.58s | 8 | 8. | 28.65s | 7. Maria Graciela Wong Rosales | PER | 59.60s | 7 | 6. | 29.04s | 8. Chinyere Pigot | SUR | 59.66s | 2 | 5. | 28.98s |
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Heat 1 | Team | time | L | Rk. | 50m | 1. Nadia Soledad Colovini | ARG | 58.16s | 4 | 2. | 28.43s | 2. Ximena Vilar | VEN | 59.33s | 5 | 3. | 28.65s | 3. Chinyere Pigot | SUR | 59.41s | 3 | 5. | 28.68s | 4. Maria Graciela Wong Rosales | PER | 1:00.09 | 6 | 6. | 29.87s | 5. Massie Milagros Carrillo Yong | PER | 1:02.82 | 2 | 18. | 30.49s | 6. Maria Lopez Nery Huerta | PAR | 1:03.06 | 7 | 19. | 29.83s | 7. Andrea Maria Gregor Ramirez | PAR | 1:06.09 | 1 | 21. | 32.24s |
Heat 2 | Team | time | L | Rk. | 50m | 1. Arlene Semeco | VEN | 58.11s | 4 | 1. | 28.33s | 2. Aixa Jazmin Triay | ARG | 58.56s | 5 | 4. | 28.76s | 3. Carmen Gisella Cianci Maury | COL | 1:00.34 | 3 | 8. | 29.24s | 4. Chandel Domaso | SUR | 1:00.80 | 7 | 11. | 29.03s | 5. Ashley Bransford | ARU | 1:02.22 | 6 | 16. | 29.28s | 6. Maria Jose Lopez Quintanilla | BOL | 1:02.62 | 1 | 17. | 30.62s | 7. Maria Sanchez | URU | 1:05.04 | 2 | 20. | 31.85s | -. Nicole Maria Marmol Gilbert | ECU | DNS | 8 | | |
Heat 3 | Team | time | L | Rk. | 50m | 1. Tatiana Barbosa | BRA | 1:00.18 | 4 | 7. | 29.18s | 2. Daynara Paula | BRA | 1:00.38 | 3 | 9. | 29.29s | 3. Raissa Andrea Guerra | URU | 1:00.65 | 2 | 10. | 29.98s | 4. Loren Yamile Bahamonde Cabello | ECU | 1:00.94 | 5 | 12. | 30.17s | 5. Karen Milenka Torrez Guzman | BOL | 1:01.67 | 7 | 13. | 29.56s | 6. Maria Clara Quintero Sosa | COL | 1:01.74 | 6 | 14. | 30.68s | 7. Nilshaira Isenia | AHO | 1:02.14 | 1 | 15. | 30.14s | -. Naomi Korstanje | AHO | DNS | 8 | | |
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