#15 Boys 400 Meters (Varsity) Start List
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | OSORIO, Manuel | JR | DeSmet Jesuit | 55.83 | |
| 2 | CAVLOVICH, Casey | SO | Chaminade College Prep | 54.62 | |
| 3 | JANSEN, Luke | JR | DeSmet Jesuit | 53.18 | |
| 4 | WILLIAMS, Lazarus | JR | St. Louis University | 50.83 | |
| 5 | SMITH, Timothy | SO | Christian Brothers College | 51.93 | |
| 6 | HARGROVE, Ke'shaun | SR | Christian Brothers College | 54.56 | |
| 7 | SONG, Yunlong | JR | St. Louis University | 54.97 |
