| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 3 | STANKOVIC, Jelena | Norridge (Ridgewood) | 1:07.87 |
| 4 | O'BRYAN, Avery | Riverside (R.-Brookfield) | 1:05.32 |
| 5 | VASQUEZ, Ashley | Riverside (R.-Brookfield) | 1:07.13 |
| 6 | HADZHIEVA, Elvira | Norridge (Ridgewood) | 1:13.09 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | ANSZCZAK, Jessica | Fenton | 1:02.03 |
| 2 | PICENO, Cielo | Rosary | 59.99 |
| 3 | HALLIDAY, Kellyn | Wheaton (St. Francis) | 58.90 |
| 4 | DIETZ, Mary | Rosary | 52.34 |
| 5 | BALOUN, Kylie | Aurora Central Catholic | 55.94 |
| 6 | MCQUEEN, Sarah | Wheaton (St. Francis) | 59.76 |
| 7 | KREZMINSKI, Olivia | Elmwood Park | 1:01.21 |
| 8 | AGUILAR, Britania | Fenton | 1:05.10 |