4 x 400 m Relay, Men
| Competition | 1968 South American Athletics U20 Championships |
|---|---|
| Venue |
Sao Paulo
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Argentina |  ARG |
3:20.9 | ||
| José Luis Amatti | — | ||||
| Milton Copparoni | — | ||||
| José Nist | — | ||||
| Carlos Bertotti | — | ||||
| 🥈 | Chile |  CHI |
3:22.0 | ||
| Carlos Varas | — | ||||
| Dumas | — | ||||
| Bernardo Díaz | — | ||||
| López | — | ||||
| 🥉 | Brazil | BRA |
3:28.1 | ||
| Antônio Fonseca | — | ||||
| Takahara | — | ||||
| Atilio Alegre | — | ||||
| Dorival Negrisoli | — |