| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 3 | GAGNE, Sam | JR | Maple Park (Kaneland) | NT |
| 4 | CABALLERO, Jacob | SR | Geneva | 58.09 |
| 5 | PREUSS, Maison | FR | Elgin (Larkin) | 1:02.95 |
| 6 | PENSINGER, Cooper | FR | West Chicago (H.S.) | NT |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | RICHEY, Bradley | JR | Bartlett | 57.68 |
| 2 | STEFFANS, Liam | SR | Elgin (H.S.) | 56.64 |
| 3 | VOGT, Michael | JR | South Elgin | 56.19 |
| 4 | PLEWA, Lukasz | JR | Carpentersville (Dundee-Crown) | 55.99 |
| 5 | FIEDLER, Dominic | JR | Maple Park (Kaneland) | 56.07 |
| 6 | VAVRA, Robert | JR | St. Charles (North) | 56.41 |
| 7 | SALAZAR, Rydel | JR | West Chicago (H.S.) | 57.41 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | ANDERSON, Peter | SR | Barrington | 54.87 |
| 2 | MANUEL, Hunter | SR | St. Charles (East) | 54.60 |
| 3 | WEST, Alex | SR | Elgin (H.S.) | 54.02 |
| 4 | BARRY, Jared | JR | Barrington | 53.49 |
| 5 | BOYD, Daijuhn | JR | Elgin (Larkin) | 53.67 |
| 6 | TOMS, Tyler | JR | Carpentersville (Dundee-Crown) | 54.49 |
| 7 | SILVERMAN, Tyler | SR | Geneva | 54.82 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | PALIGANOFF, Mitchell | SR | St. Charles (East) | 53.18 |
| 2 | BURROUGHS, Jackson | JR | Aurora (Marmion Academy) | 51.64 |
| 3 | SACHA, Konrad | JR | South Elgin | 50.05 |
| 4 | FALLON, Jonah | JR | Batavia | 49.57 |
| 5 | BRADLEY, Anthony | SR | Batavia | 49.66 |
| 6 | NEWELL, JaMari | SR | DeKalb | 51.35 |
| 7 | PALAZZETTI, Dominic | SR | St. Charles (North) | 51.72 |