| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sohn, Olivia J (11)
|
GUSSAN |
39.00 |
38.57 |
-0.43 |
| 2 |
Riddle, Gloria (11)
|
GUAGS |
43.56 |
43.00 |
-0.56 |
| 3 |
Richardson, Evelyn J (11)
|
GUPACK |
45.60 |
45.80 |
0.20 |
| 4 |
Vose, Haylee E (12)
|
GUAMBU |
47.29 |
47.70 |
0.41 |
| 5 |
Lopez, Jocelyne (11)
|
GUAMBU |
48.19 |
48.43 |
0.24 |
| 6 |
Zertuche, Ana C (11)
|
GUKATY |
|
49.67 |
- |
| 7 |
Avery, Kiersten F (11)
|
GUSSAN |
48.00 |
49.70 |
1.70 |
| 8 |
Pinkoski, Pallas N (11)
|
GUSHRK |
50.44 |
50.28 |
-0.16 |
| 9 |
Vasquez, Mary C (12)
|
GUPACK |
50.20 |
50.34 |
0.14 |
| 10 |
Stanton, Clare M (11)
|
GUAGS |
55.71 |
50.91 |
-4.80 |
| 11 |
Larson, Cayleigh B (11)
|
GUKATY |
55.75 |
50.99 |
-4.76 |
| 12 |
Shadow, Hailey R (11)
|
GUAMBU |
57.04 |
51.88 |
-5.16 |
| 13 |
Drewery, Laura E (11)
|
GUAMBU |
53.41 |
52.95 |
-0.46 |
| 14 |
Lopez DE LA Rosa, Victoria (11)
|
GUKATY |
54.97 |
53.01 |
-1.96 |
| 15 |
Hansen, Lauren E (11)
|
GUAMBU |
|
53.33 |
- |
| 16 |
Krueger, Megan G (11)
|
GUKATY |
59.07 |
56.61 |
-2.46 |
| 17 |
Schueder, Lauren E (11)
|
GUSSAN |
1:00.34 |
1:00.18 |
-0.16 |
|
Molinaro, Liliana E (11)
|
GUPACK |
|
DQ |
- |