| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Chicago (Hyde Park) | A | 53.34 |
| 2 | Chicago (Kenwood) | C | 50.84 |
| 3 | Chicago (Whitney Young) | A | 50.24 |
| 4 | Chicago (Kenwood) | A | 46.88 |
| 5 | Chicago (Lindblom) | A | 49.36 |
| 6 | Chicago (Kenwood) | B | DNS |
| 7 | Skokie (Niles North) | A | 53.00 |
| 8 | Chicago (Simeon) | B | DNS |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Chicago (Noble/DRW Trading) | A | 57.34 |
| 2 | Chicago (Noble/Rowe-Clark) | A | 56.69 |
| 3 | Chicago (Hyde Park) | B | 55.68 |
| 4 | Chicago (Simeon) | A | DNS |
| 5 | Chicago (Lindblom) | B | 55.36 |
| 6 | Chicago (Brooks) | A | 55.91 |
| 7 | Chicago (Noble/Butler) | A | 57.02 |
| 8 | Racine Case | A | 58.50 |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 2 | Chicago (Acero/Garcia) | A | 1:07.00 |
| 3 | Chicago (Noble/Comer) | A | 1:02.00 |
| 4 | Chicago (Phillips) | A | DNS |
| 5 | Chicago (Noble/ITW Speer) | A | 1:00.00 |
| 6 | Chicago (Noble/ITW Speer) | B | 1:05.00 |
| 7 | Chicago (Noble/Butler) | B | DNS |