400 m, Men
| Competition | 1947 South American Athletics Championships |
|---|---|
| Venue |
Rio de Janeiro
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Gustavo Ehlers |  CHI |
49.0 | ||
| 🥈 | Antonio Pocoví |  ARG |
49.2 | ||
| 🥉 | Guillermo Ávalos | ARG |
49.5 |