| Final | time | | 1. Clarke Scholes | USA | 57.7s | | 2. George Park | CAN | 58.7s | | 3. Carl Woolley | USA | 59.7s | | 4. Pedro Galvao | ARG | 59.7s | | 5. Milward Martin | USA | 1:00.1 | | 6. Otilio Holguin | MEX | 1:00.4 | | 7. Federico Zwanck | ARG | 1:00.7 | | 8. Antonio Galvez | CUB | 1:02.8 |
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| Heat 1 | time | Rk. | | 1. Carl Woolley | USA | 58.8s | | 2. Pedro Galvao | ARG | 59.1s | | 3. Nicasio Ferrer | CUB | 1:01.5 | | 4. Joao Gomes | BRA | 1:02.2 | | 5. Juan del Rio | MEX | 1:03.1 |
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| Heat 2 | time | Rk. | | 1. Milward Martin | USA | 59.4s | | 2. Federico Zwanck | ARG | 59.8s | | 3. Rene Muniz | MEX | 1:01.7 | | 4. Gerry McNamee | CAN | 1:01.8 | | 5. Roberto Bustillo | CUB | |
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| Heat 3 | time | Rk. | | 1. Clarke Scholes | USA | 58.3s | | 2. George Park | CAN | 59.0s | | 3. Otilio Holguin | MEX | 1:00.0 | | 4. Antonio Galvez | CUB | 1:01.2 | | 5. Manoel dos Santos | BRA | |
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