| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Zuo, Bonita R (12)
|
MAUN |
1:02.33 |
1:04.09 |
1.76 |
| 1 |
Petrakis, Grace L (11)
|
MACBR |
1:09.60 |
1:12.00 |
2.40 |
| 1 |
Block, Rebecca M (11)
|
MASSC |
1:18.17 |
1:19.12 |
0.95 |
| 2 |
Majewski, Madeline J (12)
|
MACBST |
1:04.32 |
1:05.60 |
1.28 |
| 2 |
Mottershead, Freya L (12)
|
MACBR |
1:20.51 |
1:12.95 |
-7.56 |
| 2 |
Hedlund, Paige (11)
|
MASSC |
|
1:19.39 |
- |
| 3 |
Kolessar, Kaitlyn R (12)
|
MASSC |
1:06.69 |
1:06.41 |
-0.28 |
| 3 |
Kennedy, Rori T (11)
|
MASSC |
1:14.42 |
1:14.07 |
-0.35 |
| 3 |
Ammon, Isabella R (11)
|
MAFSA |
1:20.93 |
1:20.57 |
-0.36 |
| 4 |
Kent, Lillian S (12)
|
MABSC |
|
1:15.98 |
- |
| 4 |
Daniel, Mary Katherine A (12)
|
MASSC |
|
1:23.10 |
- |
| 5 |
Stankiewicz-Goldsmit, Olivi (12)
|
MASSC |
1:14.06 |
1:16.61 |
2.55 |
| 5 |
Schaenen, Nola A (12)
|
MAFSA |
1:21.40 |
1:23.63 |
2.23 |
| 6 |
Martin, Katherine G (12)
|
MALMOR |
|
1:17.38 |
- |
| 6 |
Boyle, Jillian L (11)
|
MACBST |
1:34.40 |
1:25.11 |
-9.29 |
| 7 |
Shapiro, Sarah (12)
|
MACBR |
1:16.30 |
1:17.68 |
1.38 |
| 7 |
Sherman, Gabriella L (12)
|
MAFSA |
1:24.01 |
1:28.90 |
4.89 |