| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Calone, Emilia R (10)
|
MRUN |
1:13.13 |
1:14.34 |
1.21 |
| 2 |
Li, Audrey (9)
|
MRUN |
1:20.28 |
1:20.23 |
-0.05 |
| 3 |
Afanasewicz, Carly M (10)
|
MRNYSA |
|
1:26.33 |
- |
| 4 |
Law, Isabella Y (10)
|
MRLIAC |
1:33.96 |
1:27.69 |
-6.27 |
| 5 |
Karafin, Sasha (10)
|
MRLIAC |
1:28.99 |
1:27.82 |
-1.17 |
| 6 |
Masters, Katherine L (10)
|
MREAST |
1:35.90 |
1:30.50 |
-5.40 |
| 7 |
Diaz, Una M (9)
|
MRUN |
1:50.00 |
1:33.13 |
-16.87 |
| 8 |
Hoffman, Alixe E (10)
|
MRAGUA |
1:37.14 |
1:33.94 |
-3.20 |
| 9 |
Finley, Vivienne M (10)
|
MRLIAC |
1:40.99 |
1:35.37 |
-5.62 |
| 10 |
Cabello, Mackenzie E (10)
|
MREAST |
1:45.79 |
1:36.49 |
-9.30 |
| 11 |
Hsieh, Amelia (9)
|
MRLIAC |
1:40.99 |
1:36.87 |
-4.12 |
| 12 |
Iacobazzi, Alba (10)
|
MREAST |
1:50.00 |
1:37.95 |
-12.05 |
| 13 |
Hayes, Allison E (10)
|
MRLIAC |
|
1:42.49 |
- |
| 14 |
Chan, Janai A (10)
|
MRLIAC |
1:50.00 |
1:43.46 |
-6.54 |
| 15 |
Diaz Onderwyzer, Juliet R (10)
|
MREAST |
1:45.00 |
1:44.10 |
-0.90 |
| 16 |
Rubin, Sally M (10)
|
MRCOND |
1:48.00 |
1:49.04 |
1.04 |
| 17 |
Kohli, Eshani (9)
|
MREAST |
1:55.00 |
1:51.30 |
-3.70 |
| 18 |
Kearney, Antonia M (9)
|
MRLIAC |
2:00.00 |
1:52.50 |
-7.50 |