| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Cani, Ema * (8)
|
MRHS |
46.11 |
44.87 |
-1.24 |
| 2 |
Zhao, Madison M (8)
|
MRAPEX |
|
48.05 |
- |
| 3 |
Gonzalez, Emilianna (7)
|
MRAPEX |
45.84 |
48.22 |
2.38 |
| 4 |
Bolino, Emma R (8)
|
MRHS |
48.00 |
49.18 |
1.18 |
| 5 |
Eljordan, Tiffany (8)
|
MRNCAC |
44.00 |
49.27 |
5.27 |
| 6 |
Chen, Chiara (8)
|
MRNCAC |
47.00 |
51.44 |
4.44 |
| 7 |
Hlinka, Maria H (7)
|
MRHS |
53.70 |
55.72 |
2.02 |
| 8 |
Lamar, Sophia L (7)
|
MRHS |
56.27 |
56.05 |
-0.22 |
| 9 |
Kwan, Maggie (8)
|
MRNCAC |
50.00 |
56.44 |
6.44 |
| 10 |
Gonzalez, Lana F (7)
|
MRCOND |
|
58.40 |
- |
| 11 |
Xu, Fiona (7)
|
MRFAST |
1:12.16 |
58.70 |
-13.46 |
| 12 |
Reyes Aguirre, Juana (8)
|
MRAPEX |
|
1:04.41 |
- |
| 13 |
Tsentides, Michelle (7)
|
MRCFB |
|
1:07.06 |
- |
|
Mc Clafferty, Molly G (8)
|
MRCOND |
|
NS |
- |