400 m Hurdles, Men
| Competition | 1978 South American Athletics U20 Championships |
|---|---|
| Venue |
Sao Paulo
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Juan Carlos Fuentes |  CHI |
53.0 | ||
| 🥈 | Elías da Fonseca | BRA |
55.4 | ||
| 🥉 | Wellington da Nobrega | BRA |
55.4 |