| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | BAGLEY, Julia | Burbank (St. Laurence) | 1:27.12 |
| 2 | ROMAN, Ashley | Mather High School | 1:20.00 |
| 3 | COLE, Charlotte | Chicago (St. Ignatius College Pr | 1:18.00 |
| 4 | COOK, Hannah | Chicago (St. Ignatius College Pr | 1:16.00 |
| 5 | BESS, Teya | Chicago (Jones) | 1:16.00 |
| 6 | MACKENZIE, Gattow | Chicago (De La Salle) | 1:20.00 |
| 7 | GARCIA, Diana | Mather High School | 1:20.85 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | LIGON, Mia | Chicago (De La Salle) | 1:15.00 |
| 2 | WILSON-HILL, Kaylyn | Chicago (Jones) | 1:13.00 |
| 3 | RICHARDS, Chloe | Chicago (St. Ignatius College Pr | 1:11.41 |
| 4 | QUANSAH, Elizabeth | Chicago (Jones) | 1:10.15 |
| 5 | WASHINGTON, Kalei | Chicago (De La Salle) | 1:10.27 |
| 6 | PONDEXTER, Kelsey | South Shore International Colleg | 1:13.00 |
| 7 | CHAVEZ-NEGRON, Isabella | Burbank (St. Laurence) | 1:14.53 |
| 8 | REED, Danyelle | South Shore International Colleg | 1:15.00 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | OWUSU-YOUNG, Zaria | South Shore International Colleg | 1:10.00 |
| 2 | MANDUJANO, Amelia | Chicago (Jones) | 1:08.95 |
| 3 | CROWLEY, Reese | Chicago (St. Ignatius College Pr | 1:07.50 |
| 4 | CAREY, Alice | Chicago (St. Ignatius College Pr | 1:03.85 |
| 5 | GRIFFIN, Maeve | Chicago (St. Ignatius College Pr | 1:05.00 |
| 6 | KORFMACHER, Anna | Chicago (Jones) | 1:08.08 |
| 7 | NEDOSHYTKO, Julia | Chicago (Jones) | 1:09.10 |
| 8 | QUANSAH, Emma | Chicago (Jones) | 1:10.00 |