| Q | IHSA Class AA State Qualifying | 43.50 | State Qualifying |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 2 | Aurora (Illinois Math and Sc | A | 45.95 |
| 3 | Morris | A | 45.91 |
| 4 | New Lenox (Providence Cathol | A | 45.44 |
| 5 | Sandwich | A | 45.47 |
| 6 | Aurora (Central Catholic) | A | DNS |
| 7 | Coal City | A | 49.41 |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | LaSalle (L.-Peru) | A | DQ |
| 2 | Joliet (Catholic Academy) | A | 44.69 |
| 3 | Fairbury (Prairie Central) | A | 44.54 |
| 4 | Lisle (Benet Academy) | A | 43.63 |
| 5 | Streator (Twp.) | A | 44.44 |
| 6 | Pontiac | A | 44.67 |
| 7 | Aurora (Marmion Academy) | A | 45.21 |
| 8 | Ottawa (Twp.) | A | 45.37 |