400 m, Men
| Competition | 1980 South American Athletics U20 Championships |
|---|---|
| Venue |
Santiago
 CHI
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Joaquim Cruz |  BRA |
47.17 | ||
| 🥈 | Luis Borges | BRA |
48.64 | ||
| 🥉 | Moisés Del Castillo |  PER |
48.68 |