| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Murray, Casey L (16)
|
MRMWDA |
1:14.49 |
1:14.11 |
-0.38 |
| 1 |
Pearsall, Eloise M (18)
|
MRPATS |
1:18.08 |
1:21.09 |
3.01 |
| 2 |
Spinelli, Bianca C (17)
|
MRNDAC |
1:20.45 |
1:23.87 |
3.42 |
| 3 |
Lam, Vivian H (17)
|
MRYBAR |
1:14.23 |
1:14.87 |
0.64 |
| 3 |
Lloyd, Annina (18)
|
MRHVD |
1:19.93 |
1:31.34 |
11.41 |
| 4 |
Hannon, Morgan A (17)
|
MRHVD |
1:15.01 |
1:15.62 |
0.61 |
| 5 |
Cronin, Ava K (15)
|
MRBGNW |
1:18.47 |
1:16.39 |
-2.08 |
| 6 |
Ramirez, Gaea I (17)
|
MRSSL |
1:14.82 |
1:17.81 |
2.99 |
| 7 |
Rozman, Miriam S (16)
|
MRPAC |
1:16.77 |
1:17.84 |
1.07 |
| 8 |
Stampleman, Serena J (16)
|
MRPATS |
1:17.87 |
1:17.97 |
0.10 |
| 9 |
Perez-Quiroz, Brianna Y (18)
|
MRMHHW |
1:20.20 |
1:19.00 |
-1.20 |
| 10 |
McAuley, Nadia A (15)
|
MRNYS |
1:20.00 |
1:20.69 |
0.69 |