400 m, Men
| Competition | 1922 South American Athletics Championships |
|---|---|
| Venue |
Rio de Janeiro
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Isabelino Gradín |  URU |
50.6 | ||
| 🥈 | Dionysio De Figueirêdo | BRA |
50.8 | ||
| 🥉 | Félix Escobar |  ARG |
— |