| Final | Team | time | Rk. | | 1. Alice Driscoll | USA | 2:56.2 | 5 | | 2. Roby Trent Whipple | USA | 2:57.7 | 6 | | 3. Marjon Wilmink | CAN | 3:00.0 | 4 | | 4. Susana Peper | ARG | 3:03.7 | 7 | | 5. Marsela Berja | MEX | 3:05.9 | 2 | | 6. Maria Lidia Lesot | ARG | 3:10.6 | 8 | | -. Lisia Barth | BRA | | 3 | | -. Neiva Teresina Koper | BRA | | 9 |
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| Heat 1 | Team | time | Rk. | | 1. Roby Trent Whipple | USA | 3:00.6 | 2. | | 2. Susana Peper | ARG | 3:07.6 | 4. | | 3. Neiva Teresina Koper | BRA | 3:13.8 | 8. | | 4. Patrycia Lynne | CAN | 3:21.1 | 9. | | 5. Vivian Carron | PUR | 3:28.5 | 10. | | 6. Rosita Guzman | CHI | 3:45.0 | 12. |
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| Heat 2 | Team | time | Rk. | | 1. Alice Driscoll | USA | 2:58.2 | 1. | | 2. Marjon Wilmink | CAN | 3:02.5 | 3. | | 3. Lisia Barth | BRA | 3:07.6 | 5. | | 4. Maria Lidia Lesot | ARG | 3:11.0 | 6. | | 5. Marsela Berja | MEX | 3:12.3 | 7. | | 6. Patricia Domingues | PER | 3:28.8 | 11. |
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