| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Pelayes, Mercedes (12)
|
FGSDST |
1:26.09 |
1:24.25 |
-1.84 |
| 2 |
Wong, Corina (12)
|
FGMACM |
1:43.36 |
1:28.74 |
-14.62 |
| 3 |
Guerrero, Mia S (12)
|
FGMWA |
1:33.58 |
1:31.78 |
-1.80 |
| 4 |
Mogul, Iris I (12)
|
FGCANE |
1:37.50 |
1:35.90 |
-1.60 |
| 5 |
Larralde, Rachel - (12)
|
FGCANE |
1:48.70 |
1:37.18 |
-11.52 |
| 6 |
Ruiz, Anett (11)
|
FGMACM |
1:42.66 |
1:39.48 |
-3.18 |
| 7 |
Vazquez, Ayelen (11)
|
FGOSC |
|
1:42.97 |
- |
| 8 |
Bicerne, Amelie (11)
|
FGMWA |
|
1:43.49 |
- |
| 9 |
Rhett, Katlyn E (11)
|
FGMWA |
1:40.40 |
1:44.54 |
4.14 |
| 10 |
Garcia, Karla (12)
|
FGSDST |
|
1:49.51 |
- |
| 11 |
Schnoeller, Sabrina S (11)
|
FGSFTL |
1:55.80 |
1:49.80 |
-6.00 |
| 12 |
Halliburton, Mercedes (12)
|
FGCANE |
1:59.29 |
1:49.87 |
-9.42 |
| 13 |
Morales Harrison, Paloma I (11)
|
FGGRSC |
1:59.45 |
1:54.59 |
-4.86 |
| 14 |
Ford, Andie C (11)
|
FGSFTL |
1:59.81 |
1:57.06 |
-2.75 |
| 15 |
Barranco, Christina D (11)
|
FGGRSC |
|
2:03.38 |
- |
| 16 |
Berding, Gabriela (11)
|
FGSFTL |
|
2:05.68 |
- |
| 17 |
Schoolman-Wood, Orly C (11)
|
FGCANE |
2:33.63 |
2:15.05 |
-18.58 |
|
Boarato, Manuela D (11)
|
FGGRSC |
|
NS |
- |