| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lazzaro, Ainnara R (11)
|
FGSDST |
33.74 |
34.32 |
0.58 |
| 2 |
Olmo, Charlotte (12)
|
FGSWAT |
38.80 |
37.71 |
-1.09 |
| 3 |
Mogul, Iris I (12)
|
FGCANE |
37.96 |
38.32 |
0.36 |
| 4 |
Halliburton, Mercedes (12)
|
FGCANE |
37.85 |
38.45 |
0.60 |
| 5 |
Suarez Alarcon, Gabriella A (12)
|
FGMBS |
38.16 |
39.38 |
1.22 |
| 6 |
Membiela, Angelina S (12)
|
FGMS |
|
39.53 |
- |
| 7 |
Osman, Mariam C (12)
|
FGEA |
42.63 |
40.08 |
-2.55 |
| 8 |
Santirzo, Kaylie T (11)
|
FGMACM |
46.45 |
41.22 |
-5.23 |
| 9 |
Lopez, Karen (11)
|
FGASC |
46.91 |
44.00 |
-2.91 |
| 10 |
Zdircu, Isabella N (11)
|
FGMACM |
48.29 |
49.23 |
0.94 |
| 11 |
Bukhryakova, Sofia (12)
|
FGASC |
|
49.28 |
- |
| 12 |
Ninova, Magdalena N (12)
|
FGCANE |
51.60 |
50.66 |
-0.94 |
| 13 |
Vitkouskaya, Augustina L (11)
|
FGMBS |
|
50.67 |
- |
| 14 |
Klokova, Veronika (11)
|
FGNMST |
|
51.04 |
- |
| 15 |
Bukhryakova, Eva (12)
|
FGASC |
|
53.55 |
- |
| 16 |
Vitkouskaya, Halina (11)
|
FGMBS |
|
54.19 |
- |
|
Sime Lanang, Stacey * (11)
|
FGCANE |
42.17 |
NS |
- |
|
Scullin, Priscilla L (12)
|
FGCANE |
|
NS |
- |
|
Smith, Layne (11)
|
FGFKSC |
37.31 |
NS |
- |