| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Deng, Alexa G (15)
|
MRMPNY |
54.37 |
54.90 |
0.53 |
| 2 |
Roller, Mary Q (17)
|
MRFREE |
55.77 |
55.50 |
-0.27 |
| 3 |
Deng, Chloe S (17)
|
MRMPNY |
57.53 |
56.65 |
-0.88 |
| 4 |
Bailey-Hamm, Elizabeth C (16)
|
MRFREE |
1:02.75 |
58.99 |
-3.76 |
| 5 |
Law, Brianna (15)
|
MRMPNY |
57.82 |
59.20 |
1.38 |
| 6 |
Makhmadalieva, Parvina (16)
|
MRMPNY |
1:00.43 |
1:00.65 |
0.22 |
| 7 |
Chuk, Ellie (16)
|
MRFREE |
1:03.03 |
1:01.58 |
-1.45 |
| 8 |
Augustin-Orcel, Gabrielle N (17)
|
MRBKR |
1:00.40 |
1:01.92 |
1.52 |
| 9 |
Ryan, Agatha V (16)
|
MRBKR |
1:20.00 |
1:02.67 |
-17.33 |
| 10 |
Savkin, Ksenia (16)
|
MRMPNY |
1:02.58 |
1:02.80 |
0.22 |
| 11 |
Dominguez, Celia (17)
|
MRBKR |
1:10.14 |
1:09.15 |
-0.99 |
| 12 |
Thorpe, Kayla (15)
|
MRFREE |
1:19.99 |
1:27.36 |
7.37 |
|
Griem, Caroline S (15)
|
MRBKR |
1:06.49 |
NS |
- |
|
Lubinsky, Isabel (16)
|
MRBKR |
1:15.22 |
NS |
- |