400 m, Men
| Competition | 1981 South American Athletics Championships |
|---|---|
| Venue |
La Paz
 BOL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Geraldo José Pegado |  BRA |
46.8 | ||
| 🥈 | Gérson de Souza | BRA |
47.8 | ||
| 🥉 | Pablo Squella |  CHI |
48.0 |