| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Park Ridge (Maine East) | A | 1:39.97 |
| 2 | Hoffman Estates (Conant) | A | 1:38.43 |
| 3 | Hoffman Estates (H.S.) | A | 1:36.94 |
| 4 | Glen Ellyn (Glenbard West) | A | 1:35.90 |
| 6 | Franklin Park-Northlake (Leyden) | A | 1:37.87 |
| 7 | Lombard (Glenbard East) | A | 1:39.28 |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Zion (Z.-Benton) | A | 1:35.40 |
| 2 | Park Ridge (Maine South) | A | 1:33.20 |
| 3 | Richmond (R.-Burton) | A | 1:32.86 |
| 4 | Minooka | A | 1:29.30 |
| 5 | Hillside (Proviso West) | A | 1:31.00 |
| 6 | Mt. Prospect (Prospect) | A | 1:32.90 |
| 7 | Rock Island (H.S.) | A | 1:34.50 |
| 8 | Addison (A. Trail) | A | 1:35.60 |