| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Villamil, Ana M (14)
|
FGMWA |
1:01.34 |
1:00.66 |
-0.68 |
| 2 |
Cote, Mariana (14)
|
FGMWA |
1:00.29 |
1:00.95 |
0.66 |
| 3 |
Bellardi, Nicol A (14)
|
FGMWA |
1:08.77 |
1:02.76 |
-6.01 |
| 4 |
Deluna, Gabriella S (13)
|
FGMWA |
1:03.27 |
1:03.73 |
0.46 |
| 5 |
Franco, Emily E (14)
|
FGMACM |
1:04.77 |
1:05.82 |
1.05 |
| 6 |
Musiello, Giovanna P (13)
|
FGGRSC |
1:04.41 |
1:06.25 |
1.84 |
| 7 |
Lopez-Diaz, Emily L (14)
|
FGMWA |
1:41.57 |
1:06.83 |
-34.74 |
| 8 |
Ortiz, Daniela S (14)
|
FGMWA |
1:13.56 |
1:08.81 |
-4.75 |
| 9 |
Torres-Torres, Nicole M (14)
|
FGGRSC |
1:28.01 |
1:20.89 |
-7.12 |
| 10 |
Saballos, Fabiola (14)
|
FGPST |
|
1:29.88 |
- |
| 11 |
Hernandez, Valeria (14)
|
FGYSF |
|
1:30.05 |
- |