4 x 400 m Relay, Men
| Competition | 1981 South American Athletics U20 Championships |
|---|---|
| Venue |
Rio de Janeiro
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Brazil | BRA |
3:12.7 | ||
| Marcos Vieira | — | ||||
| Geraldo De Assis | — | ||||
| Carlos De Souza | — | ||||
| Luis Borges | — | ||||
| 🥈 | Venezuela |  VEN |
3:14.6 | ||
| Aarón Phillips | — | ||||
| Luis Romero | — | ||||
| González | — | ||||
| Oswaldo Zea | — | ||||
| 🥉 | Chile |  CHI |
3:16.1 | ||
| Carlos Contreras | — | ||||
| Ramón Torrealba | — | ||||
| Alejandro Krauss | — | ||||
| Pablo Squella | — |