4 x 400 m Relay, Men
| Competition | 1989 South American Athletics U20 Championships |
|---|---|
| Venue |
Montevideo
 URU
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Brazil |  BRA |
3:14.84 | ||
| Inaldo de Sena | — | ||||
| Luís Elói | — | ||||
| Eronilde de Araújo | — | ||||
| Paulo Rodrigues | — | ||||
| 🥈 | Venezuela |  VEN |
3:17.38 | ||
| Armando Sufia | — | ||||
| Jesús Ochoa | — | ||||
| Juan Díaz | — | ||||
| Nogales | — | ||||
| 🥉 | Argentina |  ARG |
3:20.51 | ||
| Rafael Allende | — | ||||
| Guillermo Cacián | — | ||||
| Miguel Pérez | — | ||||
| Román Serra | — |