| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Ying, Joy (11)
|
MAMSA |
1:08.65 |
1:09.71 |
1.06 |
| 1 |
Stankiewicz-Goldsmit, Olivi (11)
|
MASSC |
1:17.89 |
1:15.04 |
-2.85 |
| 2 |
Oswald, Delaney R (12)
|
MASSC |
1:15.27 |
1:16.52 |
1.25 |
| 2 |
Daltry, Gabrielle G (11)
|
MAWA |
1:19.99 |
1:17.49 |
-2.50 |
| 3 |
Black, Eliza (12)
|
MASSC |
1:19.52 |
1:17.81 |
-1.71 |
| 3 |
Miller, McKelden L (12)
|
MADYD |
1:15.34 |
1:19.17 |
3.83 |
| 4 |
Bailey, Skylar J (12)
|
MAWCAY |
1:24.85 |
1:18.82 |
-6.03 |
| 5 |
Tallapragada, Harshitha (11)
|
MASSC |
1:24.50 |
1:19.39 |
-5.11 |
| 6 |
Rahardjo, Seraphim C (11)
|
MASSC |
1:31.91 |
1:23.50 |
-8.41 |
| 7 |
Cohen, Maren K (12)
|
MABSC |
|
1:26.11 |
- |
| 8 |
O'Brien, Eryn (12)
|
MADYD |
1:35.75 |
1:35.24 |
-0.51 |
| 9 |
Hartley, Sophia G (12)
|
MAMSA |
1:45.05 |
1:43.73 |
-1.32 |
|
Miller, Emily E (11)
|
MAWA |
|
NS |
- |
|
Steiner, Emma C (11)
|
MASSC |
|
NS |
- |
|
Mitchell, Victoria S (12)
|
MASSC |
1:11.57 |
NS |
- |
|
Lester - Stranick, Sarah R (11)
|
MABYNS |
1:44.14 |
NS |
- |