4 x 400 m Relay, Men
| Competition | 1991 South American Athletics U20 Championships |
|---|---|
| Venue |
Asuncion
 PAR
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Brazil |  BRA |
3:21.1 | ||
| Alesandre Morato | — | ||||
| Rogerio Da Silva | — | ||||
| Sanderlei Parrela | — | ||||
| Peterson Alves | — | ||||
| 🥈 | Argentina |  ARG |
3:24.3 | ||
| Nelson López | — | ||||
| Ceferino Mondino | — | ||||
| Andrés Vittone | — | ||||
| Cristián Díaz | — | ||||
| 🥉 | Chile |  CHI |
3:27.4 | ||
| Sebastián Keitel | — | ||||
| Mauro González | — | ||||
| Pablo Almeida | — | ||||
| Óscar Cavero | — |