| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | JONES, Cayson | Chicago (North Lawndale Charter) | NT |
| 2 | MENDOZA PENA, Tomas | Chicago (Latin) | 51.73 |
| 3 | HOWARD, Quincy | Winnetka (North Shore Country Day) | 49.22 |
| 4 | ROBINSON, Zack | Chicago (C. Hope Academy) | 47.90 |
| 5 | KEBABTCHIEFF, Louis | Chicago (Lycée Français de Chicago) | 48.91 |
| 6 | MELENDREZ, Diego | Chicago (Rickover Naval Academy) | 49.66 |
| 7 | WILENS, Avi | Deerfield (Rochelle Zell) | NT |
| 8 | MOSLEY, Antwan | Chicago (North Lawndale Charter) | NT |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | MADKINS, Dillon | Chicago (F.W. Parker) | 47.44 |
| 2 | HARRIOTT, Lucas | Evanston (Beacon Academy) | 46.28 |
| 3 | THOMAS, Daniel | Chicago (Noble/Rowe-Clark) | 43.93 |
| 4 | PRINCE, Mykai | Chicago (C. Hope Academy) | 43.44 |
| 5 | PHILLIPS, Justin | Chicago (Wolcott) | 43.48 |
| 6 | STEELE, Leif | Winnetka (North Shore Country Day) | 45.96 |
| 7 | KING IV, Calvin | Chicago (Latin) | 46.78 |
| 8 | BODY, Shamar | Chicago (Crane Medical Prep) | 47.68 |