| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 2 | MITE, Alexandra | JR | Chicago (Taft) | 1:19.05 | 
| 3 | TORRES, Lailah | FR | Berwyn-Cicero (Morton) | 1:14.78 | 
| 4 | MEDRANO, Mylze | SR | Belvidere | 1:13.90 | 
| 5 | CLEMENCI, Mary | FR | Roselle (Lake Park) | 1:14.13 | 
| 6 | KROTOSZYNSKI, Olivia | FR | Buffalo Grove | 1:17.62 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | BAZIANOS, Julia | FR | Northbrook (Glenbrook North) | 1:13.60 | 
| 2 | AUYEUNG, Natalie | SO | Hoffman Estates (Conant) | 1:12.30 | 
| 3 | MYERS, Kylie | SO | Minooka | 1:09.84 | 
| 4 | MESSENGER, Bree | SO | Belvidere (North) | 1:08.90 | 
| 5 | HUSKIE, Julia | JR | Palatine (Fremd) | 1:09.80 | 
| 6 | BARCAS, Dylann | SR | Joliet (West) | 1:12.00 | 
| 7 | SAVOIA COOLEY, Patty | JR | Bartlett | 1:12.46 | 
| 8 | TELLEZ, Gissell | SO | Hoffman Estates (H.S.) | 1:13.88 |