| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Hyndman, Kailah (12)
|
MRHES |
1:08.98 |
1:12.23 |
3.25 |
| 2 |
Vega, Kayla C (11)
|
MRHES |
1:13.33 |
1:12.89 |
-0.44 |
| 3 |
Austin, Jessica R (11)
|
MRRA |
1:15.41 |
1:15.31 |
-0.10 |
| 4 |
Javier, Chrisabella K (12)
|
MRAPEX |
1:18.66 |
1:16.62 |
-2.04 |
| 5 |
Rojas-Tineo, Mairene R (12)
|
MRAPEX |
1:21.63 |
1:17.89 |
-3.74 |
| 6 |
Chavez, Kaetlyn K (11)
|
MRAPEX |
1:16.60 |
1:18.24 |
1.64 |
| 7 |
Brown, Annie R (12)
|
MRYFD |
1:28.38 |
1:19.17 |
-9.21 |
| 8 |
Radford, Tess E (11)
|
MRYFD |
1:24.23 |
1:21.00 |
-3.23 |
| 9 |
McKibben, Morgan J (11)
|
MRYFD |
1:25.72 |
1:23.46 |
-2.26 |
| 10 |
Vaughan-Johnson, Sophie L (12)
|
MRRA |
1:21.06 |
1:24.27 |
3.21 |
| 11 |
Ai, Allina (12)
|
MRYFD |
1:26.82 |
1:24.95 |
-1.87 |
| 12 |
Antman, Sabrina L (11)
|
MRRA |
1:27.67 |
1:26.09 |
-1.58 |
| 13 |
Wong, Kelly M (11)
|
MRAPEX |
1:27.99 |
1:26.39 |
-1.60 |
| 14 |
Ge, Xinrui (11)
|
MRAPEX |
1:25.72 |
1:27.43 |
1.71 |
| 15 |
Moore, Lily (11)
|
MRYFD |
|
1:28.00 |
- |
| 16 |
Augustin-Orcel, Gabrielle N (11)
|
MRBKR |
1:35.00 |
1:28.48 |
-6.52 |
| 17 |
O'Brien, Kelsey R (11)
|
MRMWSC |
1:26.40 |
1:28.53 |
2.13 |
| 18 |
Shpak, Olivia G (12)
|
MRRA |
1:36.96 |
1:32.74 |
-4.22 |
| 19 |
Venezia, Madelyn S (11)
|
MRRA |
1:35.13 |
1:36.33 |
1.20 |
| 20 |
Long, Kelsey (11)
|
MRRIST |
1:55.00 |
1:38.00 |
-17.00 |
| 21 |
Van Poppel, Charlee A (12)
|
MRMWSC |
1:40.89 |
1:40.84 |
-0.05 |
| 22 |
Sullivan, Fiona (12)
|
MRASAP |
1:38.95 |
1:45.73 |
6.78 |
| 23 |
O'Heir, Ava E (11)
|
MRBKR |
1:55.00 |
1:49.82 |
-5.18 |
| 24 |
Principe, Jesse (11)
|
MRBKR |
1:53.00 |
2:00.41 |
7.41 |
|
Saxon, Isabella N (12)
|
MRMWSC |
1:40.89 |
DQ |
- |
|
Roth, Clementine L (11)
|
MRYFD |
|
DQ |
- |
|
Springer, Fawziyyah (12)
|
MRHES |
1:12.49 |
NS |
- |
|
Dominguez, Celia (11)
|
MRBKR |
1:35.00 |
NS |
- |