| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sherpa, Sharon D (13)
|
MRLGAC |
1:02.50 |
1:03.81 |
1.31 |
| 1 |
Spodek, Sienna L (13)
|
MRYFD |
1:01.35 |
58.77 |
-2.58 |
| 2 |
Campusano, Fabiane (13)
|
MRBAD |
1:02.53 |
1:03.94 |
1.41 |
| 2 |
Chin, Cassidy K (13)
|
MRFREE |
57.79 |
58.78 |
0.99 |
| 3 |
Longhitano, Leana R (13)
|
MRLGAC |
1:02.39 |
1:04.03 |
1.64 |
| 3 |
Erdal, Yasemin (13)
|
MRLGAC |
59.18 |
59.19 |
0.01 |
| 4 |
Hunter, Madeleine J (13)
|
MRLIE |
1:02.10 |
1:05.52 |
3.42 |
| 4 |
Williamson, Blessing S (13)
|
MRLIE |
59.00 |
59.42 |
0.42 |
| 5 |
De Mendonca, Sophia A (13)
|
MRMCBY |
59.73 |
59.84 |
0.11 |
| 6 |
Zhang, Suri (13)
|
MRFREE |
1:01.47 |
59.91 |
-1.56 |
| 7 |
Lee, Lucy S (13)
|
MRYFD |
1:00.34 |
1:00.42 |
0.08 |
| 8 |
Dojillo, Chloe R (13)
|
MRLGAC |
1:00.50 |
1:00.49 |
-0.01 |
| 9 |
Egleston, Carys I (13)
|
MRYFD |
1:00.93 |
1:00.75 |
-0.18 |
| 10 |
Sciortino, Sienna B (13)
|
MRLIE |
1:01.91 |
1:01.82 |
-0.09 |
| 11 |
Fong-Causone, Sofia A (13)
|
MRYFD |
1:01.94 |
1:02.32 |
0.38 |
| 12 |
Wangmo, Karma (13)
|
MRLGAC |
1:02.89 |
1:02.60 |
-0.29 |
| 13 |
Meyer, Abby H (13)
|
MRLIE |
1:02.43 |
1:02.98 |
0.55 |