| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Dudley, Madeleine P (10)
|
MARAD |
1:20.66 |
1:20.35 |
-0.31 |
| 1 |
Toland, Grace F (10)
|
MASPFD |
1:25.25 |
1:21.25 |
-4.00 |
| 1 |
Keitel, Arden S (10)
|
MASPFD |
1:31.70 |
1:31.16 |
-0.54 |
| 2 |
Lake, Alice M (10)
|
MARAD |
1:24.30 |
1:21.64 |
-2.66 |
| 2 |
Patterson, Julienne M (10)
|
MASPFD |
1:31.85 |
1:33.09 |
1.24 |
| 3 |
Kifer, Helen J (9)
|
MASCAY |
1:23.96 |
1:22.10 |
-1.86 |
| 3 |
Persun, Kiley N (10)
|
MAWASC |
1:34.13 |
1:34.20 |
0.07 |
| 4 |
McGranaghan, Murphy C (10)
|
MASPFD |
1:23.76 |
1:22.92 |
-0.84 |
| 4 |
LaFrazza-Schwartz, Cameron C (9)
|
MANLAC |
1:39.34 |
1:34.68 |
-4.66 |
| 5 |
Keitel, Nieve S (10)
|
MASPFD |
1:29.34 |
1:27.02 |
-2.32 |
| 5 |
Edwards, Olivia M (10)
|
MASPFD |
1:36.86 |
1:36.41 |
-0.45 |
| 6 |
Kumar, Ianna K (9)
|
MARAD |
1:57.82 |
1:45.98 |
-11.84 |
| 7 |
Dare, Reagan A (9)
|
MANLAC |
2:00.94 |
1:53.26 |
-7.68 |
|
Kostic, Eva M (10)
|
MARAD |
1:42.26 |
DQ |
- |
|
Frank, Grace A (9)
|
MARAD |
1:51.90 |
DQ |
- |
|
Wade, Emma M (10)
|
MASPFD |
1:18.20 |
NS |
- |
|
Fuller, Claire M (9)
|
MANLAC |
1:44.58 |
NS |
- |