| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | MURPHY, Emma | JR | LaGrange Park (Nazareth Academy) | NT | 
| 2 | SLOAN, Meredith | JR | River Forest (Trinity) | 1:20.00 | 
| 3 | LESTER, Taylor | JR | LaGrange Park (Nazareth Academy) | NT | 
| 4 | VIRAMONTES, Natalie | FR | Joliet (West) | NT | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | MCCULLUM, Nevayah | FR | Joliet (West) | 1:18.00 | 
| 2 | RHODES, Kiley | SO | Streator (Twp.) | 1:09.00 | 
| 3 | LABECK, Madison | JR | Plainfield (South) | 1:10.00 | 
| 4 | LAVOIE, Ella | JR | Plainfield (Central) | 1:18.24 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | LEFLORE, Ashanti | SR | Plainfield (Central) | 1:05.74 | 
| 2 | BOWMAN, Jahnel | SO | Plainfield (South) | 1:02.00 | 
| 3 | PINA, Cassandra | SR | Joliet (Central) | 1:05.46 | 
| 4 | MARSZALEK, Maciah | SO | Joliet (Central) | 1:06.99 |