| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
McDonald, Sydney A (11)
|
ORHEAT |
1:14.57 |
1:13.45 |
-1.12 |
| 2 |
Boardman, Mena (11)
|
ORPAC |
1:22.81 |
1:17.15 |
-5.66 |
| 3 |
Zhao, ZiRui (11)
|
ORTEAM |
1:19.53 |
1:18.16 |
-1.37 |
| 4 |
Nguyen, Lily V (11)
|
ORPAC |
1:19.84 |
1:18.38 |
-1.46 |
| 5 |
Schmidt, Rowan I (12)
|
OROCST |
1:25.20 |
1:18.83 |
-6.37 |
| 6 |
Peng, Isabel C (12)
|
PNOCA |
1:18.78 |
1:19.12 |
0.34 |
| 7 |
Kellerman, Sasha A (11)
|
ORHEAT |
1:25.41 |
1:19.51 |
-5.90 |
| 8 |
Ambarak, Rayan A (12)
|
ORHEAT |
1:27.93 |
1:20.90 |
-7.03 |
| 9 |
Turcanu, Alexandra (11)
|
PNOCA |
1:21.94 |
1:23.07 |
1.13 |
| 10 |
Sim, Yuni L (12)
|
ORTEAM |
1:25.70 |
1:25.15 |
-0.55 |
| 11 |
Maya, Ana V (11)
|
ORGOLD |
1:23.26 |
1:25.16 |
1.90 |
| 12 |
Grigsby, Natalie K (12)
|
ORTEAM |
1:32.41 |
1:26.57 |
-5.84 |
| 13 |
Pai, Shriya (11)
|
ORGOLD |
1:25.17 |
1:26.68 |
1.51 |
| 14 |
Sommers, Kyleigh S (12)
|
ORHEAT |
1:33.70 |
1:27.75 |
-5.95 |
| 15 |
Levina, Anastasia A (12)
|
PNOCA |
1:27.48 |
1:28.70 |
1.22 |
| 16 |
Reeves, Devon O (11)
|
OROCST |
1:32.83 |
1:31.65 |
-1.18 |
| 17 |
Sieckhaus, Madison P (11)
|
PNOCA |
1:32.27 |
1:32.81 |
0.54 |
| 18 |
Yingsel, Tenzin (11)
|
ORHEAT |
1:40.69 |
1:33.93 |
-6.76 |
| 19 |
Chechitelli, Jamie M (11)
|
PNOCA |
1:32.46 |
1:34.67 |
2.21 |
| 20 |
Little, Sydney R (11)
|
ORPAC |
1:37.41 |
1:34.78 |
-2.63 |
| 21 |
Pena, Averyl J (11)
|
OROCST |
1:39.07 |
1:35.20 |
-3.87 |
| 22 |
Jin, Katie D (12)
|
ORGOLD |
1:34.85 |
1:36.05 |
1.20 |
| 23 |
Nguyen, Thien-Mai H (11)
|
ORGOLD |
1:46.41 |
1:38.02 |
-8.39 |
| 24 |
Noce, Sabrina A (12)
|
OROCST |
1:46.00 |
1:40.58 |
-5.42 |
| 25 |
Ito Gross, Nina (11)
|
ORTEAM |
1:40.42 |
1:40.78 |
0.36 |
| 26 |
Piquette, Claire L (11)
|
ORTEAM |
|
1:45.79 |
- |
|
Wright, Eleanor K (12)
|
OROCST |
1:43.99 |
NS |
- |
|
Wen, Julia C (11)
|
ORGOLD |
1:31.58 |
NS |
- |