| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Valenzuela, Isabel A (12)
|
MRBGNW |
1:02.47 |
1:00.31 |
-2.16 |
| 2 |
Santos, Isabelle G (12)
|
MRPAC |
59.08 |
1:02.14 |
3.06 |
| 3 |
Johnson, Evangeline N (11)
|
MRUNAT |
1:02.32 |
1:03.73 |
1.41 |
| 4 |
Lin, Orly A (12)
|
MRUN |
1:04.11 |
1:04.18 |
0.07 |
| 5 |
White, Finley M (11)
|
MRBGNW |
1:08.23 |
1:04.27 |
-3.96 |
| 6 |
O'Donnell, Katherine A (12)
|
MRBGNW |
1:01.78 |
1:04.82 |
3.04 |
| 7 |
Ramirez, Lily L (11)
|
MRUN |
1:01.90 |
1:04.93 |
3.03 |
| 8 |
Masella, Alexandra V (11)
|
MRMAKO |
1:04.00 |
1:06.08 |
2.08 |
| 9 |
Aydin, Zoey L (11)
|
MRPAC |
1:09.98 |
1:08.03 |
-1.95 |
| 10 |
McPartland, Zofia T (12)
|
MRMAKO |
1:08.00 |
1:09.67 |
1.67 |
| 11 |
Messinger-Nanni, Julia J (11)
|
MRAGUA |
1:07.00 |
1:10.06 |
3.06 |
| 12 |
Callaghan, Brigid M (12)
|
MRBGNW |
1:12.51 |
1:10.49 |
-2.02 |
| 13 |
Suiu, Sophia R (12)
|
MRBGNW |
1:14.21 |
1:10.50 |
-3.71 |
| 14 |
Riccio, Allison J (11)
|
MRPAC |
1:23.63 |
1:18.09 |
-5.54 |
| 15 |
Argueta, Celine A (12)
|
MRPAC |
1:31.73 |
1:20.55 |
-11.18 |
| 16 |
Riley, Kira M (11)
|
MRPAC |
1:45.99 |
1:44.50 |
-1.49 |
|
Valerio, Sara A (12)
|
MRWEST |
58.94 |
NS |
- |