| Final | Team | time | L | Rk. | 50m | 100m | 150m | | 1. Carolina Mussi | BRA | 2:39.75 | 4 | 1. | 35.75s | 1:16.01 | 1:57.65 | | 2. Tatiane Sakemi | BRA | 2:41.22 | 3 | 3. | 35.54s | 1:15.50 | 1:58.60 | | 3. Mijal Asis | ARG | 2:43.13 | 2 | 5. | 37.18s | 1:17.25 | 2:00.27 | | 4. Daniela Victoria | VEN | 2:44.50 | 5 | 2. | 36.06s | 1:17.69 | 2:00.91 | | 5. Patricia Mariana Quevedo San Martin | PER | 2:45.25 | 6 | 4. | 36.75s | 1:19.25 | 2:02.16 | | 6. Mercedes Toledo | VEN | 2:45.44 | 7 | 6. | 35.84s | 1:18.81 | 2:01.73 | | 7. Monica Lorena Alvarez Rincon | COL | 2:48.20 | 1 | 7. | 36.51s | 1:18.30 | 2:03.56 | | 8. Raysa Malu Gonzales Ruiz | PER | 2:55.16 | 8 | 8. | 37.28s | 1:21.90 | 2:07.55 |
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| Heat 1 | Team | time | L | Rk. | 50m | 100m | 150m | | 1. Carolina Mussi | BRA | 2:42.60 | 5 | 1. | 35.25s | 1:16.12 | 1:58.21 | | 2. Monica Lorena Alvarez Rincon | COL | 2:49.17 | 3 | 7. | 37.35s | 1:19.05 | 2:04.38 | | 3. Laura Catherine Galarza Ramirez | COL | 2:53.25 | 6 | 9. | 37.53s | 1:21.62 | 2:06.54 | | 4. Ashley Bransford | ARU | 2:54.31 | 2 | 10. | 39.05s | 1:22.41 | 2:08.99 | | 5. Lujan Amarilla Vargas | PAR | 3:02.74 | 1 | 12. | 41.03s | 1:27.08 | 2:15.71 | | -. Agustina De Giovanni | ARG | DNS | 4 | | | | | | -. Daniella Van Den Berg | ARU | DNS | 7 | | | | |
| Heat 2 | Team | time | L | Rk. | 50m | 100m | 150m | | 1. Daniela Victoria | VEN | 2:43.65 | 3 | 2. | 37.75s | 1:19.07 | 2:02.94 | | 2. Tatiane Sakemi | BRA | 2:44.99 | 4 | 3. | 36.30s | 1:17.36 | 2:00.98 | | 3. Patricia Mariana Quevedo San Martin | PER | 2:46.02 | 6 | 4. | 37.12s | 1:19.01 | 2:01.74 | | 4. Mijal Asis | ARG | 2:46.19 | 5 | 5. | 36.69s | 1:17.85 | 2:01.41 | | 5. Mercedes Toledo | VEN | 2:46.29 | 7 | 6. | 36.09s | 1:19.14 | 2:02.12 | | 6. Raysa Malu Gonzales Ruiz | PER | 2:52.94 | 2 | 8. | 38.42s | 1:21.22 | 2:07.23 | | 7. Silvana Andrea Paniagua Valenzuela | PAR | 2:59.87 | 1 | 11. | 40.94s | 1:25.29 | 2:12.80 |
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