400 m Hurdles, Men
| Competition | 1966 South American Athletics U20 Championships |
|---|---|
| Venue |
Montevideo
 URU
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Juan Santiago Gordón |  CHI |
54.7 | ||
| 🥈 | Ricardo Sirvent |  ARG |
56.3 | ||
| 🥉 | Juan Krommchoder | CHI |
57.5 |