| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 2 | Round Lake Magee | A | 1:02.10 | |
| 3 | Gurnee Viking | A | 58.50 | |
| 4 | North Chicago Neal | A | 57.80 | |
| 5 | Antioch | A | 58.00 | |
| 6 | Round Lake MS | A | 59.70 |
| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 1 | Round Lake Park | A | 55.80 | |
| 2 | Grayslake | A | 55.40 | |
| 3 | Beach Park | A | 55.00 | |
| 4 | Ingleside Big Hollow | A | 54.30 | |
| 5 | Gurnee Woodland | A | 54.40 | |
| 6 | Lindenhurst Millburn MS | A | 55.00 | |
| 7 | Lake Villa Palombi | A | 55.70 | |
| 8 | Zion Central | A | 57.70 |