| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 3 | FITZGERALD, Keira | JR | Chicago (Taft) | 59.91 | 
| 4 | JACKSON, Soloria | JR | Rockford (Auburn) | 58.32 | 
| 5 | MUCK, Dellana | SR | Belvidere (North) | 59.48 | 
| 6 | SAMMOUR, Noor | SR | Berwyn-Cicero (Morton) | 1:00.65 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | FLORES, Beverly | JR | Buffalo Grove | 56.94 | 
| 2 | LIN, Yu Li | FR | Hoffman Estates (H.S.) | 55.41 | 
| 3 | HOHREITER, Paige | SO | Minooka | 55.13 | 
| 4 | RICHTER, Stella | SO | Hoffman Estates (Conant) | 52.35 | 
| 5 | OFURUM, Nicole | SR | Palatine (Fremd) | 54.82 | 
| 6 | MODRAKOVIC, Sara | SO | Roselle (Lake Park) | 55.35 | 
| 7 | MAY, Arriana | SR | Joliet (West) | 56.62 | 
| 8 | LAM, Audrey | SO | Northbrook (Glenbrook North) | 57.79 |