4 x 400 m Relay, Men
| Competition | 1977 South American Athletics U18 Championships |
|---|---|
| Venue |
Rio de Janeiro
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Venezuela |  VEN |
3:25.4 | ||
| José Obispo | — | ||||
| Pedro Martínez | — | ||||
| Antonio Rivas | — | ||||
| Raúl Martínez | — | ||||
| 🥈 | Brazil | BRA |
3:26.8 | ||
| Sidney Dos Santos | — | ||||
| Tomás De Alencar | — | ||||
| Marcio Gonzaga | — | ||||
| Carlos Amorim dos Santos | — | ||||
| 🥉 | Chile |  CHI |
3:29.2 | ||
| Guillermo García | — | ||||
| Héctor Fernández | — | ||||
| Sergio Cárdenas | — | ||||
| Luis Lagos | — |