| SQ | IHSA State Qualifying | 1:29.43 |
| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 1 | Ottawa (Twp.) | A | 1:39.00 | |
| 2 | Aurora (Waubonsie Valley) | A | 1:36.21 | |
| 3 | Oswego (East) | A | DQ | |
| 4 | Plainfield (Central) | A | 1:32.96 | |
| 5 | East Moline (United) | A | 1:33.21 | |
| 6 | Washington | A | 1:35.31 | |
| 7 | Plainfield (South) | A | 1:36.70 | |
| 8 | Aurora (East) | A | 1:39.21 |
| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 1 | Yorkville (H.S.) | A | 1:32.36 | |
| 2 | Plainfield (East) | A | 1:30.71 | |
| 3 | Moline (H.S.) | A | 1:29.97 | |
| 4 | Plainfield (North) | A | 1:28.15 | |
| 5 | Rock Island (H.S.) | A | 1:29.43 | |
| 6 | Naperville (Neuqua Valley | A | 1:30.21 | |
| 7 | Peoria (H.S.) | A | 1:32.20 | |
| 8 | Oswego (H.S.) | A | 1:32.56 |