| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sargent, Abbie E (12)
|
FGFKSC |
35.67 |
32.96 |
-2.71 |
| 2 |
Pelayes, Mercedes (12)
|
FGSDST |
32.30 |
32.97 |
0.67 |
| 3 |
Smith, Corley F (14)
|
FGFKSC |
37.48 |
36.69 |
-0.79 |
| 4 |
Villar, Ariadne M (13)
|
FGCANE |
36.65 |
38.04 |
1.39 |
| 5 |
Sargent, Olivia (14)
|
FGFKSC |
37.94 |
38.41 |
0.47 |
| 6 |
Cohen, Mia J (15)
|
FGAJSC |
38.82 |
39.20 |
0.38 |
| 7 |
Mercado, Keira R (12)
|
FGEA |
42.46 |
40.97 |
-1.49 |
| 8 |
Olmo, Charlotte (12)
|
FGSWAT |
45.37 |
42.39 |
-2.98 |
| 9 |
Garrocho, Marffa (13)
|
FGMBS |
40.66 |
42.65 |
1.99 |
| 10 |
Garcia, Karla (12)
|
FGSDST |
44.02 |
43.34 |
-0.68 |
| 11 |
Halliburton, Mercedes (12)
|
FGCANE |
47.32 |
44.36 |
-2.96 |
| 12 |
Funk, Abigail R (12)
|
FGEA |
39.97 |
45.87 |
5.90 |
| 13 |
Santirzo, Kaylie T (11)
|
FGMACM |
49.63 |
46.62 |
-3.01 |
| 14 |
De La Vega, Carolina P (15)
|
FGCANE |
53.03 |
51.14 |
-1.89 |
| 15 |
Bukhryakova, Sofia (12)
|
FGASC |
|
56.24 |
- |
|
Vitkouskaya, Augustina L (11)
|
FGMBS |
|
DQ |
- |
|
Vitkouskaya, Halina (11)
|
FGMBS |
|
DQ |
- |
|
Klokova, Veronika (11)
|
FGNMST |
|
DQ |
- |
|
Bukhryakova, Eva (12)
|
FGASC |
|
DQ |
- |