| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Cioffi, Fiamma (14)
|
MREAST |
1:14.99 |
1:13.92 |
-1.07 |
| 2 |
Frey, Dolores S (14)
|
MREAST |
1:20.44 |
1:14.05 |
-6.39 |
| 3 |
Cabello, Mackenzie E (14)
|
MREAST |
1:14.11 |
1:14.14 |
0.03 |
| 4 |
Casey, Emma D (13)
|
MREAST |
1:24.11 |
1:20.03 |
-4.08 |
| 5 |
Brenner, Alexandra R (14)
|
MREAST |
1:19.63 |
1:20.61 |
0.98 |
| 6 |
Troja, Sophia S (13)
|
MREAST |
1:19.11 |
1:20.63 |
1.52 |
| 7 |
Arth, Alexandra K (13)
|
CTGRYM |
1:27.62 |
1:25.35 |
-2.27 |
| 8 |
Wang, Louisa M (14)
|
CTGRYM |
1:24.62 |
1:28.06 |
3.44 |
| 9 |
Rolston, Viviana Q (13)
|
MREAST |
1:26.90 |
1:28.07 |
1.17 |
| 10 |
Chen, Madeleine R (13)
|
MREAST |
1:28.35 |
1:28.35 |
0.00 |
| 11 |
Gojka, Sienna L (13)
|
MREAST |
1:38.40 |
1:32.57 |
-5.83 |