| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Viera, Isabel (10)
|
FGMACM |
1:21.56 |
1:17.76 |
-3.80 |
| 2 |
Karachun, Daryna (10)
|
FGYSF |
1:29.38 |
1:26.18 |
-3.20 |
| 3 |
Perez, Maria C (10)
|
FGMWA |
|
1:26.43 |
- |
| 4 |
Montenegro, Makayla E (9)
|
FGMACM |
1:33.31 |
1:31.88 |
-1.43 |
| 5 |
Di Sarno, Naiyla F (9)
|
FGMWA |
1:28.43 |
1:31.99 |
3.56 |
| 6 |
Altamura, Benedetta R (10)
|
FGPST |
|
1:39.94 |
- |
| 7 |
Roldan, Arianna * (9)
|
FGGRSC |
|
1:41.55 |
- |
| 8 |
Almodovar, Lauren S (10)
|
FGGRSC |
1:46.55 |
1:43.03 |
-3.52 |
| 9 |
Moreno, Antonia (9)
|
FGGRSC |
1:48.26 |
1:44.29 |
-3.97 |
| 10 |
Ramos Miret, Carolina (9)
|
FGMACM |
|
1:47.56 |
- |
| 11 |
Dabus, Rafaela A (9)
|
FGGRSC |
|
1:58.75 |
- |
| 12 |
Souza, Gabriela L (10)
|
FGGRSC |
|
2:01.03 |
- |
|
Viera, Andrea (10)
|
FGMACM |
1:31.48 |
DQ |
- |
|
Chaison, Molly A (10)
|
FGMWA |
1:37.76 |
NS |
- |