| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | BERKSHIRE, Jack | University of Toronto Track C | 47.85 | ||
| 4 | PAGE , Champ | Chase Athletics | 45.54 | ||
| 5 | VERBERGE, David | Pure Athletics | 44.41 | ||
| 6 | LYLES, Josephus | Pure Athletics | 44.79 | ||
| 7 | HUDSON-SMITH, Mathew | Pure Athletics | 44.47 | ||
| 8 | KADESTAL, Kasper | MAI | 46.98 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | UIBO, Michael | Pure Athletics | NT | ||
| 3 | COLOME, armando | Rams Elite | 49.40 | ||
| 4 | WYKES, Cade | University of Toronto Track C | 48.70 | ||
| 5 | TOPIN, Jovan | Pure Athletics | 47.50 | ||
| 6 | KARAM, Charles | Lebanon | 48.00 | ||
| 7 | SYMONDS, Jacob | liit | 48.90 | ||
| 8 | SIMONEAU, Gabriel | CAUL | 49.69 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | SMITH, Calvin | Unattached | 45.25 | ||
| 4 | RUSSELL, Alonzo | Unattached | 45.05 | ||
| 5 | SUBER, Stanley | Unattached | 47.50 | ||
| 6 | HALL, Arman | SR | Unattached | 44.82 | |
| 7 | OSEI, philip | Unattached | 45.23 | ||
| 8 | PARKER, Cameron | SR | Unattached | 45.80 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | HARPER, daniel | Unattached | 45.60 | ||
| 4 | BLAKEMORE, Isaac | Unattached | 45.50 | ||
| 5 | HORNE, Pat | SR | Unattached | 50.00 | |
| 6 | THOMPSON, Kendrick | JR | Unattached | 46.02 | |
| 7 | DURDEN, Jeffery | Unattached | NT |