| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Boardman, Mena (11)
|
ORPAC |
1:07.70 |
1:05.79 |
-1.91 |
| 2 |
Chen, Zoe (11)
|
ORLOSC |
1:05.76 |
1:05.88 |
0.12 |
| 3 |
Koch, Cassandra L (11)
|
ORLOSC |
1:09.33 |
1:07.27 |
-2.06 |
| 4 |
Zhao, Zirui (11)
|
ORTEAM |
1:09.04 |
1:08.37 |
-0.67 |
| 5 |
Thornton, Madelaine K (11)
|
ORBEND |
1:11.08 |
1:08.77 |
-2.31 |
| 6 |
Springmeyer, Andrea J (11)
|
ORWSC |
1:14.72 |
1:10.19 |
-4.53 |
| 7 |
Hackett, Delaney J (11)
|
ORHRST |
1:13.35 |
1:11.32 |
-2.03 |
| 8 |
Ames, Charlotte G (11)
|
ORPAC |
1:13.22 |
1:11.50 |
-1.72 |
| 9 |
Knox, Skye H (11)
|
ORBEND |
1:13.99 |
1:12.13 |
-1.86 |
| 10 |
Uchishiba-Hall, Emelia T (11)
|
ORLOSC |
1:12.67 |
1:13.40 |
0.73 |
| 11 |
Slaughter, Julia A (11)
|
ORSSS |
1:14.91 |
1:13.66 |
-1.25 |
| 12 |
Cupo-Carleton, Anna Grace (11)
|
ORTEAM |
1:15.36 |
1:14.29 |
-1.07 |
| 13 |
Maya, Ana V (11)
|
ORTHSC |
1:15.42 |
1:16.60 |
1.18 |
|
Atay, Ayah I (11)
|
ORTHSC |
1:12.93 |
DQ |
- |