4 x 400 m Relay, Men
| Competition | 1981 South American Athletics Championships |
|---|---|
| Venue |
La Paz
 BOL
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Brazil |  BRA |
3:09.5 | ||
| Zequinha Barbosa | — | ||||
| Geraldo José Pegado | — | ||||
| Gérson de Souza | — | ||||
| Agberto Guimarães | — | ||||
| 🥈 | Chile |  CHI |
3:11.8 | ||
| Pablo Squella | — | ||||
| Emilio Ulloa | — | ||||
| Francisco Pichott | — | ||||
| Claudio Muñoz | — | ||||
| 🥉 | Argentina |  ARG |
3:12.2 | ||
| Nicolás Glass | — | ||||
| Jorge Díaz | — | ||||
| Ángel Carlos Gagliano | — | ||||
| Raúl López | — |