| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Palamaro, Daniella L (17)
|
MREAST |
59.89 |
1:02.28 |
2.39 |
| 2 |
Hricay, Grace M (15)
|
MREAST |
1:01.73 |
1:02.89 |
1.16 |
| 3 |
Lynch, Katherine H (16)
|
MREAST |
1:02.73 |
1:05.18 |
2.45 |
| 4 |
D'Alessandro, Lena G (15)
|
MREAST |
1:14.70 |
1:07.15 |
-7.55 |
| 5 |
Jadot, Manon V (14)
|
MREAST |
1:00.92 |
1:08.33 |
7.41 |
| 6 |
Mello, Anna E (17)
|
MREAST |
1:05.17 |
1:11.04 |
5.87 |
| 7 |
Wiese, Zoey G (13)
|
MREAST |
1:16.96 |
1:14.18 |
-2.78 |
| 8 |
Barron, Grace E (15)
|
MREAST |
1:20.46 |
1:21.58 |
1.12 |
| 9 |
Vanover, Danielle R (13)
|
MREAST |
1:22.13 |
1:23.80 |
1.67 |
| 10 |
Otis, Luella K (13)
|
MREAST |
1:57.80 |
1:25.23 |
-32.57 |
| 11 |
Xie, Sophie (13)
|
MREAST |
1:24.02 |
1:27.82 |
3.80 |
| 12 |
Constantino, Kelly E (13)
|
MRUN |
1:30.74 |
1:28.35 |
-2.39 |
| 13 |
Wang, Melissa R (13)
|
MREAST |
1:27.45 |
1:33.26 |
5.81 |