400 m, Men
| Competition | 1960 South American Athletics U20 Championships |
|---|---|
| Venue |
Santiago
 CHI
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Juan Carlos Dyrzka |  ARG |
49.3 | ||
| 🥈 | Mario Gastelú |  PER |
50.0 | ||
| 🥉 | Hugo Starosta | ARG |
50.5 |