| Final | time | ||
| 1. Felix Sänchez |  Dominicana | 48.19s | |
| 2. Eric Thomas |  United States | 48.74s | |
| 3. Dean Griffiths |  Jamaica | 49.35s | |
| 4. Oscar Juanz |  Mexico | 50.28s | |
| 5. Regan Nichols | United States | 50.31s | |
| 6. Sergio Hierrezuelo |  Cuba | 50.34s | |
| 7. Adam Kunkel |  Canada | 50.43s | |
| 8. Eronilde Nunes De Araujo |  Brazil | 51.19s |
| 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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