400 m, Men
| Competition | 1959 South American Athletics U20 Championships |
|---|---|
| Venue |
Buenos Aires
 ARG
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Fernando Zapeda |  CHI |
51.1 | ||
| 🥈 | Juan Carlos Dyrzka | ARG |
51.7 | ||
| 🥉 | Jordi Radmilovic | CHI |
51.9 |