| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 3 | LEE, Elijah | SO | Portage | NT | 
| 4 | CLARK, Kendall | JR | Chicago (De La Salle) | 58.47 | 
| 5 | BANDO, Ty | JR | Portage | 1:02.68 | 
| 6 | PEREZ, Richard | JR | Chicago (St. Ignatius College Prep) | NT | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 2 | IVEY, Jemari | FR | Chicago (De La Salle) | 56.72 | 
| 3 | RAKOCZY, Pawel | JR | Wheeling | 56.10 | 
| 4 | PAVLOV, Alex | JR | Wheeling | 55.80 | 
| 5 | MENSAH, Benedictus | JR | Mundelein (Carmel) | 55.98 | 
| 6 | GIOVENCO, Alessandro | SR | Niles (Notre Dame) | 56.47 | 
| 7 | GAUGHAN, Michael | JR | Chicago (St. Ignatius College Prep) | 57.13 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | MOYER, Kevin | SR | Mundelein | 55.41 | 
| 2 | JONES, Deavion | JR | Hillside (Proviso West) | 55.00 | 
| 3 | TECTOR, Connor | SO | Mundelein | 54.80 | 
| 4 | SEMERJIAN, Ryan | SR | Algonquin (Jacobs) | 54.40 | 
| 5 | MANNING, Pacey | SO | Palatine (H.S.) | 54.71 | 
| 6 | THOMAS, Jamaris | SO | Maywood (Proviso East) | 54.80 | 
| 7 | WILLIAMS, Tyrone | SO | Maywood (Proviso East) | 55.00 | 
| 8 | CHEIKYCHARLA, Rithwik | JR | Schaumburg | 55.43 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | JONES, Deon | SR | Hillside (Proviso West) | 54.00 | 
| 2 | ARMOUR, Jack | JR | Niles (Notre Dame) | 53.92 | 
| 3 | LOPEZ, David | SR | Palatine (H.S.) | 51.86 | 
| 5 | CERWIN, Luke | SR | Mundelein (Carmel) | 51.55 | 
| 6 | ANDREANO, Matthew | JR | Algonquin (Jacobs) | 53.60 | 
| 7 | SHUTT, Cohen | JR | Woodstock (H.S.) | 53.94 | 
| 8 | GREENLEE, Aidan | SR | Woodstock (H.S.) | 54.16 |