| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sichtnik, Sophia (12)
|
MRWSA |
1:12.32 |
1:12.59 |
0.27 |
| 2 |
Fan, Alyssa Y (11)
|
MRMAKO |
1:12.29 |
1:14.11 |
1.82 |
| 3 |
Fong, Joline (11)
|
MRMAKO |
1:19.05 |
1:16.76 |
-2.29 |
| 4 |
Smith, Piper A (11)
|
MRBGNW |
1:18.93 |
1:16.94 |
-1.99 |
| 5 |
McNulty, Emma G (11)
|
MRLIAC |
1:17.08 |
1:17.12 |
0.04 |
| 6 |
Goldner, Sylvie (12)
|
MRMAKO |
1:18.02 |
1:17.19 |
-0.83 |
| 7 |
Ge, Xinrui (11)
|
MRAPEX |
1:19.03 |
1:17.22 |
-1.81 |
| 8 |
Andrade, Daniela E (12)
|
MRLIAC |
1:18.85 |
1:18.39 |
-0.46 |
| 9 |
Dzieciolowski, Sophie L (11)
|
MRLIAC |
1:19.12 |
1:18.42 |
-0.70 |
| 10 |
Bernardo, Sophia M (11)
|
MRLIAC |
1:21.75 |
1:18.80 |
-2.95 |
| 11 |
Friedman, Alexandra E (11)
|
MRBAD |
1:21.48 |
1:19.13 |
-2.35 |
| 12 |
St Thomas, Alyssa V (11)
|
MRLIAC |
1:18.73 |
1:19.24 |
0.51 |
| 13 |
Burris, Helen (12)
|
MRMAKO |
1:20.05 |
1:19.62 |
-0.43 |
| 14 |
Goldaber, Sarah K (12)
|
MRLIAC |
1:19.12 |
1:20.71 |
1.59 |
| 15 |
Henriksson, Emma (12)
|
MRBAD |
1:24.80 |
1:20.84 |
-3.96 |
| 16 |
Winters, Mia E (11)
|
MRMAKO |
1:22.52 |
1:22.00 |
-0.52 |
| 17 |
Andrews, Olivia A (11)
|
MRBGNW |
1:26.92 |
1:23.32 |
-3.60 |
| 18 |
Fitzgerald, Alexandra R (12)
|
MRBGNW |
1:22.79 |
1:23.38 |
0.59 |
| 19 |
Melgar, Noelle R (11)
|
MRLIAC |
1:23.23 |
1:24.40 |
1.17 |
| 20 |
Calise, Maria L (12)
|
MRHES |
1:27.39 |
1:25.93 |
-1.46 |
| 21 |
Prisco, Alexandra C (11)
|
MRBAD |
|
1:26.46 |
- |
| 22 |
Phillip, Danielle J (11)
|
MRLIAC |
1:28.46 |
1:34.12 |
5.66 |
| 23 |
Reid, Vanessa N (11)
|
MRLIAC |
1:37.06 |
1:39.16 |
2.10 |
|
Puchert, Grace C (12)
|
MRNYCC |
1:12.35 |
NS |
- |
|
Fei, Yin (11)
|
MRBAD |
1:22.05 |
NS |
- |