| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Convery, Sarah A (12)
|
MRBGNW |
1:10.03 |
1:11.08 |
1.05 |
| 3 |
Kakugo, Akane F (12)
|
MRYMID |
1:20.29 |
1:17.33 |
-2.96 |
| 4 |
Fagan, Paige C (12)
|
MRBGNW |
1:20.48 |
1:19.68 |
-0.80 |
| 5 |
White, Sienna R (11)
|
MRBGNW |
1:21.29 |
1:22.67 |
1.38 |
| 6 |
Chen, Joyce W (12)
|
MRBGNW |
1:21.45 |
1:22.79 |
1.34 |
| 7 |
Leu, Mindy B (11)
|
MRLIAC |
1:37.63 |
1:22.92 |
-14.71 |
| 8 |
Cole, Emily F (12)
|
MRBGNW |
1:21.14 |
1:23.04 |
1.90 |
| 9 |
Whelley, Magdalena M (12)
|
MRBGNW |
1:23.98 |
1:23.93 |
-0.05 |
| 10 |
Hill, Sasha (11)
|
MRYMID |
1:27.53 |
1:25.69 |
-1.84 |
| 11 |
Bounds, Bae (11)
|
MRBGNW |
1:26.88 |
1:25.91 |
-0.97 |
| 12 |
Ogaki, Chisa (12)
|
MRYMID |
1:23.87 |
1:27.44 |
3.57 |
| 13 |
Tassier, Katherine A (11)
|
MRBGNW |
1:34.82 |
1:40.52 |
5.70 |
| 14 |
Kahn, Sophia A (12)
|
MRBGNW |
1:24.67 |
1:40.55 |
15.88 |
| 15 |
Abels, Marissa G (11)
|
MRLIAC |
1:43.30 |
1:40.62 |
-2.68 |
| 16 |
Rose, Madeline I (11)
|
MRLIAC |
1:47.00 |
1:44.21 |
-2.79 |
| 17 |
Joseph, Lucina M (11)
|
MRLIAC |
1:50.00 |
1:58.67 |
8.67 |
| 18 |
Champagne, Chanel (11)
|
MRKBM |
1:48.00 |
2:10.47 |
22.47 |