| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Riley, Elizabeth M (16)
|
FGYSF |
55.34 |
56.39 |
1.05 |
| 2 |
Serrao, Marianna (17)
|
FGYSF |
56.11 |
57.97 |
1.86 |
| 3 |
Amon, Ashlynn (17)
|
FGYSF |
56.96 |
58.12 |
1.16 |
| 4 |
Ruiz, Alexandra (15)
|
FGYSF |
58.75 |
59.13 |
0.38 |
| 5 |
Drucker, Alexandra R (17)
|
FGPST |
56.81 |
1:01.06 |
4.25 |
| 6 |
Abad, Victoria A (18)
|
FGPST |
56.29 |
1:01.92 |
5.63 |
| 7 |
Van Gent, Anastacia M (16)
|
FGYSF |
1:02.77 |
1:02.63 |
-0.14 |
| 8 |
Munoz, Paulina (16)
|
FGYSF |
1:08.91 |
1:09.49 |
0.58 |
| 9 |
Szepesi, Olivia L (15)
|
FGPAQ |
|
1:14.56 |
- |
| 10 |
Aghassi, Samantha (15)
|
FGPAQ |
1:24.19 |
1:18.68 |
-5.51 |
| 11 |
Mimick, Annamarie R (15)
|
FGPAQ |
1:42.69 |
1:27.65 |
-15.04 |