| Final | time | ||
| 1. Mitch Potter |  United States | 45.11s | |
| 2. Geyman L�pez |  Cuba | 45.13s | |
| 3. Alleyne Francique |  Grenada | 45.51s | |
| 4. Adam Steele | United States | 45.72s | |
| 5. Shane Niemi |  Canada | 45.78s | |
| 6. Carlos Santa |  Dominicana | 45.85s | |
| 7. Michael Campbell |  Jamaica | 46.10s | |
| 8. Davian Clarke | Jamaica | 46.17s |
| Todor66 | |
| Pan America Games 2003 index | |
| Pan America Games Athletics index | |
| World Athletics index | |
| . |
Prepared and maintained by Todor Krastev
todor1966@yahoo.com
Last updated: 30 Oct 2023
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