| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Levin, Sara (10)
|
FGSF |
1:16.44 |
1:15.97 |
-0.47 |
| 2 |
Moreno, Sofia (9)
|
FGGRSC |
1:17.88 |
1:20.27 |
2.39 |
| 3 |
Gonzalez, Sofia (10)
|
FGUN-0 |
|
1:26.40 |
- |
| 4 |
Suarez, Rhania G (10)
|
FGCSSC |
1:29.44 |
1:28.93 |
-0.51 |
| 5 |
Negrin, Paola (9)
|
FGFFSC |
1:28.36 |
1:30.02 |
1.66 |
| 6 |
Spada, Mariana C (10)
|
FGBRST |
1:33.39 |
1:33.56 |
0.17 |
| 7 |
Smutny, Lydia M (8)
|
FGAKS |
|
1:33.69 |
- |
| 8 |
Perez, Isabella M (9)
|
FGCSSC |
1:41.87 |
1:36.20 |
-5.67 |
| 9 |
Montes, Mariana (9)
|
FGCSSC |
1:30.85 |
1:38.28 |
7.43 |
| 10 |
Megyeri, Lilla (10)
|
FGCSSC |
|
1:41.25 |
- |
| 11 |
Jimenez Pena, Dilcia E (7)
|
FGBMHG |
|
1:48.10 |
- |
| 12 |
Dinehart, Elise I (8)
|
FGAKS |
|
1:48.13 |
- |
| 13 |
Nassery, Melissa (10)
|
FGSOFL |
|
1:52.54 |
- |
|
Glowczewski, Maiya R (10)
|
FGBRST |
|
NS |
- |