| Event | Heat | Status | |
|---|---|---|---|
| Boys 400 M 15-16 years old (Prelims) | 4| | ||
| Friday | 
| Pl | Ln | Athlete | Time | |
|---|---|---|---|---|
| 1 | 5 | Nick MCALISTER JR. Unattached [15] | 50.21 | |
| 2 | 4 | Zaven JOHNSON Legacy Runners Athletic Club [15] | 50.38 | |
| 3 | 7 | Francisco TRUJILLO Blue Devils Track Club [16] | 51.20 | |
| 4 | 6 | Kobe MILLER Strong Arm Elite [15] | 51.70 | |
| 5 | 8 | Kendall SLOANE Five Star General Athletics [16] | 53.93 | |
| DNS | 3 | Caleb ROSS Trojan Athletics Track Club [16] | - |