| Final 18:05 | Team | time | L | React. | Bib | | 1. Omar Cisneros | CUB | 47.99s | RP | 4 | 0.232 | 528 | | 2. Isa Phillips | JAM | 48.82s | | 5 | 0.233 | 630 | | 3. Felix Sanchez Marcelo | DOM | 48.85s | | 7 | 0.209 | 563 | | 4. Winder Bolivar Cuevas Perez | DOM | 49.20s | PB | 8 | 0.209 | 560 | | 5. Mahau Suguimati | BRA | 49.61s | | 3 | 0.189 | 473 | | 6. Emanuel Mayers | TRI | 50.00s | | 6 | 0.172 | 714 | | 7. Reuben Isaiah Mccoy | USA | 50.18s | | 2 | 0.268 | 744 | | 8. Lee Ellis Moore | USA | 51.10s | | 1 | 0.212 | 746 |
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| World Record: | | Kevin Young (USA) 46.78s | | Barcelona (ESP) 06.08.1992 | | Panamerican Record: | | Felix Sanchez (DOM) 48.19s | | Santo Domingo - DOM 06.08.2003 |
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| Heats - Wednesday 26.10 - First 2 and Best 2 progress. |
| Heat 1 15:35 | Team | time | L | React. | Bib | | 1. Isa Phillips | JAM | 49.62s | | 5 | 0.250 | 630 | | 2. Emanuel Mayers | TRI | 49.86s | PB | 4 | 0.183 | 714 | | 3. Lee Ellis Moore | USA | 50.58s | | 2 | 0.204 | 746 | | 4. Juan Stenner | MEX | 50.87s | PB | 8 | 0.173 | 671 | | 5. Alie Beauvais | HAI | 51.67s | | 3 | 0.155 | 599 | | 6. Emerson Alejandro Chala | ECU | 53.53s | | 6 | 0.184 | 566 | | -. Allan Guillermo Ayala | GUA | DNF | | 7 | 0.235 | 586 |
| Heat 2 15:43 | Team | time | L | React. | Bib | | 1. Mahau Suguimati | BRA | 50.20s | | 8 | 0.237 | 473 | | 2. Felix Sanchez Marcelo | DOM | 50.22s | | 3 | 0.204 | 563 | | 3. Reuben Isaiah Mccoy | USA | 50.60s | | 7 | 0.289 | 744 | | 4. Erick Alejandro | PUR | 51.28s | | 6 | 0.187 | 686 | | 5. Amaurys Raul Valle | CUB | 51.29s | | 4 | 0.123 | 553 | | 6. Jose Luis Ceballos | MEX | 51.33s | PB | 5 | 0.261 | 646 |
| Heat 3 15:51 | Team | time | L | React. | Bib | | 1. Omar Cisneros | CUB | 48.99s | SB | 5 | 0.241 | 528 | | 2. Winder Bolivar Cuevas Perez | DOM | 50.12s | SB | 7 | 0.162 | 560 | | 3. Victor Solarte | VEN | 51.31s | | 6 | 0.210 | 782 | | 4. Kenneth Medwood | BIZ | 51.90s | | 8 | 0.239 | 440 | | 5. Junior Hines | CAY | 52.36s | | 4 | 0.183 | 482 | | -. Andres Bayron Silva | URU | DNF | | 3 | 0.199 | 721 |
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