| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Renna, Julia (15)
|
MRSSC |
1:15.30 |
1:17.78 |
2.48 |
| 1 |
Cavallo, Isabella M (16)
|
MRCSDC |
1:40.77 |
1:20.89 |
-19.88 |
| 2 |
Andrejczuk, Alexandra K (15)
|
MRLIAC |
1:17.29 |
1:18.42 |
1.13 |
| 2 |
Gucciardo, Gianna T (15)
|
MRLIAC |
1:20.32 |
1:22.63 |
2.31 |
| 3 |
Giunta, Natalia L (17)
|
MRTVSC |
1:17.41 |
1:18.64 |
1.23 |
| 3 |
Ramirez, Claire R (17)
|
MRSSC |
1:20.25 |
1:23.08 |
2.83 |
| 4 |
Casement, Rachelle (15)
|
MRLIAC |
1:17.21 |
1:18.91 |
1.70 |
| 4 |
Rivera, Lauren M (15)
|
MRIA |
1:19.41 |
1:24.11 |
4.70 |
| 5 |
Colefield, Sarah B (16)
|
MRCSDC |
1:18.25 |
1:19.53 |
1.28 |
| 6 |
Sherry, Esther J (16)
|
MRFA |
1:18.84 |
1:19.62 |
0.78 |
| 7 |
Azralon, Danielle (15)
|
MRSSC |
1:17.76 |
1:20.18 |
2.42 |
| 8 |
Davi, Julia G (17)
|
MRWISC |
1:19.21 |
1:20.29 |
1.08 |
| 9 |
Schuppert, Christina M (17)
|
MRCSDC |
1:20.30 |
1:20.36 |
0.06 |