| Final | time | ||
| 1. Malvin Whitfield |  United States | 47.8s | |
| 2. Hugo Maiocco | United States | 48.0s | |
| 3. Herbert McKenley |  Jamaica | 48.2s | |
| 4. John Voight | United States | 48.3s | |
| 5. Angel Garcia |  Cuba | 48.4s | |
| 6. Gustavo Ehlers |  Chile | 49.4s |
| Todor66 | |
| Pan America Games 1951 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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