400 m, Men
| Competition | 1979 South American Athletics U18 Championships |
|---|---|
| Venue |
Cochabamba
 BOL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Joaquim Cruz |  BRA |
48.3 | ||
| 🥈 | Douglas Murillo |  VEN |
48.6 | ||
| 🥉 | Oswaldo Zea | VEN |
50.6 |