| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Vitale, Miya N (13)
|
MRPATS |
56.00 |
56.71 |
0.71 |
| 2 |
Murray, Miranda B (13)
|
MRDVWM |
58.18 |
57.74 |
-0.44 |
| 3 |
Rojas-Tineo, Mairene R (13)
|
MRAPEX |
57.72 |
58.79 |
1.07 |
| 4 |
Soltanova, Stephanie (14)
|
MRHS |
1:01.17 |
59.37 |
-1.80 |
| 5 |
Baker, Zoe A (16)
|
MRAPEX |
1:02.50 |
1:01.59 |
-0.91 |
| 6 |
Abrams, Anna M (13)
|
MRPATS |
1:04.00 |
1:04.97 |
0.97 |
| 7 |
Javier, Chrisabella K (13)
|
MRAPEX |
1:08.57 |
1:07.46 |
-1.11 |
| 8 |
Martinez, Xitlali E (14)
|
MRAPEX |
1:06.01 |
1:09.29 |
3.28 |
| 9 |
Wong, Joyce H (13)
|
MRHS |
1:08.15 |
1:10.18 |
2.03 |
| 10 |
Rimsky, Sophia (13)
|
MRCENT |
1:16.23 |
1:10.58 |
-5.65 |
| 11 |
Lau, Allison T (15)
|
MRNCAC |
1:16.34 |
1:17.10 |
0.76 |
|
Suteja, Kezia S (13)
|
MRNCAC |
1:03.25 |
NS |
- |