| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | Tabak, Jaden | SO | Elgin (E. Academy) | 59.88 | |
| 4 | Vasquez, Anthony | FR | Northridge Prep | 58.00 | |
| 5 | Manilow, Oliver | Chicago (Francis W. Parker) | 59.61 | ||
| 6 | Chau, Hy | SR | Elgin (E. Academy) | NT |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Borghans, Roberto | SR | Chicago (Latin) | 55.50 | |
| 2 | Martin, Aidan | FR | Northridge Prep | 54.25 | |
| 3 | White, Sean | SR | Chicago (University) | 53.53 | |
| 4 | Figueroa, Ismael Rua | SO | Chicago (University) | 52.50 | |
| 5 | O'Connor, Brad | SR | Winnetka (North Shore Country Day) | 53.38 | |
| 6 | Satpathy, Atman | SR | Chicago (Latin) | 53.58 | |
| 7 | Humphrey, Ryan | SO | Chicago (Francis W. Parker) | 55.10 | |
| 8 | Zavala, Aidan | JR | Winnetka (North Shore Country Day) | 56.31 |