| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kolessar, Kaitlyn R (12)
|
MASSC |
1:12.86 |
1:16.58 |
3.72 |
| 1 |
Zuo, Bonita R (12)
|
MAUN |
1:18.49 |
1:20.48 |
1.99 |
| 1 |
Block, Rebecca M (11)
|
MASSC |
1:25.58 |
1:27.94 |
2.36 |
| 2 |
Petrakis, Grace L (11)
|
MACBR |
1:17.56 |
1:17.95 |
0.39 |
| 2 |
Majewski, Madeline J (12)
|
MACBST |
1:27.77 |
1:22.64 |
-5.13 |
| 2 |
Sherman, Gabriella L (12)
|
MAFSA |
1:30.62 |
1:28.48 |
-2.14 |
| 3 |
Wareikis, Isabella S (12)
|
MABSC |
1:17.91 |
1:18.27 |
0.36 |
| 3 |
Scanlon, Katie (12)
|
MASPFD |
1:22.69 |
1:22.68 |
-0.01 |
| 3 |
Ammon, Isabella R (11)
|
MAFSA |
1:27.67 |
1:28.88 |
1.21 |
| 4 |
Daniel, Mary Katherine A (12)
|
MASSC |
|
1:24.52 |
- |
| 4 |
Boyle, Jillian L (11)
|
MACBST |
|
1:32.79 |
- |
| 5 |
Swain, Marley M (11)
|
MACBST |
1:28.42 |
1:24.96 |
-3.46 |
| 5 |
Watkins, Evangeline M (11)
|
MASSC |
1:32.34 |
1:33.46 |
1.12 |
| 6 |
Schaenen, Nola A (12)
|
MAFSA |
1:21.94 |
1:25.08 |
3.14 |
| 6 |
Cameron, Kennedy K (11)
|
MACBST |
1:45.06 |
1:33.49 |
-11.57 |
| 7 |
Hendrzak, Anna G (11)
|
MASPFD |
1:27.62 |
1:25.99 |
-1.63 |
| 7 |
Maltby, Elizabeth S (11)
|
MATHY |
1:36.05 |
1:35.19 |
-0.86 |
| 8 |
Mottershead, Freya L (12)
|
MACBR |
|
1:26.71 |
- |
| 8 |
Brakhop, Erin M (11)
|
MACBST |
1:33.03 |
1:35.26 |
2.23 |
| 9 |
Bottino, Gianna M (12)
|
MACBST |
1:41.61 |
1:36.16 |
-5.45 |
| 10 |
Lebedinskiy, Chelsea N (11)
|
MACBST |
1:38.70 |
1:37.71 |
-0.99 |
| 11 |
Satheesh, Varunikha M (12)
|
MACBST |
1:39.76 |
1:38.27 |
-1.49 |
| 12 |
Hillier, Caroline R (11)
|
MASSC |
|
1:39.90 |
- |
| 13 |
Chayka, Abigail S (11)
|
MACBST |
1:48.49 |
1:41.83 |
-6.66 |
| 14 |
Reilly, Malea E (11)
|
MACBST |
1:52.66 |
1:44.98 |
-7.68 |
| 15 |
Scungio, Siena J (11)
|
MASSC |
1:45.41 |
1:45.15 |
-0.26 |
| 16 |
Kozloff, Olivia L (12)
|
MACBST |
|
1:52.79 |
- |
| 17 |
Hendrawan, Chiara (11)
|
MACBR |
|
1:55.38 |
- |