| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Yaremenko, Isabelle (17)
|
MRMPNY |
58.23 |
58.25 |
0.02 |
| 2 |
Law, Brianna (15)
|
MRMPNY |
57.82 |
58.82 |
1.00 |
| 3 |
Winters, Emma C (17)
|
MRFREE |
58.60 |
58.98 |
0.38 |
| 4 |
Yan, Meeya J (17)
|
MRFREE |
59.45 |
59.67 |
0.22 |
| 5 |
Makhmadalieva, Parvina (17)
|
MRMPNY |
1:00.43 |
1:00.40 |
-0.03 |
| 6 |
Augustin-Orcel, Gabrielle N (18)
|
MRBKR |
1:00.40 |
1:00.81 |
0.41 |
| 7 |
Bailey-Hamm, Elizabeth C (16)
|
MRFREE |
58.99 |
1:01.18 |
2.19 |
| 8 |
Ryan, Agatha V (16)
|
MRBKR |
1:02.67 |
1:01.61 |
-1.06 |
| 9 |
Gaouette, Leila B (17)
|
MRBKR |
1:05.46 |
1:02.37 |
-3.09 |
| 10 |
Lubinsky, Isabel (16)
|
MRBKR |
1:15.22 |
1:04.06 |
-11.16 |
| 11 |
Sheran, Samantha P (16)
|
MRBKR |
1:02.00 |
1:10.18 |
8.18 |
| 12 |
Thorpe, Kayla (15)
|
MRUNAT |
1:27.36 |
1:25.32 |
-2.04 |
|
Jourdes, Paloma (17)
|
MRBKR |
1:09.19 |
NS |
- |