| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 1 | BORCHERS, Addison | 7 | Winston | 1:25.80 | |
| 2 | PATLA, Elizabeth | 7 | Plum Grove | 1:20.00 | |
| 3 | KEMENY, Payton | 7 | Sandburg (Rolling Meadows) | 1:14.76 | |
| 4 | PATEL, Anvi | 7 | Walter R. Sundling | 1:13.00 | |
| 5 | HINSHAW, Anna | 7 | Walter R. Sundling | 1:13.00 | |
| 6 | LIN, Sophia | 7 | Plum Grove | 1:15.00 | |
| 7 | KUZNICKI, Payton | 7 | Sandburg (Rolling Meadows) | 1:23.36 | |
| 8 | CHICAS, Madeline | 7 | Winston | 1:27.40 | 
| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 2 | SIVA, Rahini | 7 | Plum Grove | 1:36.00 | |
| 3 | MAHLA, Kes | 7 | Sandburg (Rolling Meadows) | 1:24.99 | |
| 4 | FERNANDEZ, Leah | 7 | Walter R. Sundling | 1:14.00 | |
| 5 | COLLINS, Mackenzie | 7 | Walter R. Sundling | 1:14.00 | |
| 6 | GONZALES, Sam | 7 | Winston | 1:35.40 | |
| 7 | WATFA, Cynthia | 7 | Winston | NT |