| Q | IHSA Class AAA State Qualifying | 1:30.04 | State Qualifying |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Calumet City (Thornton Fract | A | DNS |
| 2 | Oak Forest | A | 1:35.41 |
| 3 | New Lenox (Lincoln-Way Centr | A | 1:34.57 |
| 4 | South Holland (Thornwood) | A | 1:33.19 |
| 5 | Frankfort (Lincoln-Way East) | A | 1:34.12 |
| 6 | Harvey (Thornton) | A | 1:34.86 |
| 7 | Midlothian (Bremen) | A | 1:36.50 |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Lansing (Thornton Fractional | A | 1:32.21 |
| 2 | Chicago Heights (Bloom Twp.) | A | 1:30.62 |
| 3 | Tinley Park (Andrew) | A | 1:30.30 |
| 4 | Crete (C.-Monee) | A | 1:29.28 |
| 5 | Flossmoor (Homewood-F.) | A | 1:29.46 |
| 6 | Bradley (B.-Bourbonnais) | A | 1:30.37 |
| 7 | Richton Park (Rich Township) | A | 1:31.45 |
| 8 | New Lenox (Lincoln-Way West) | A | DNS |