400 m, Men
| Competition | 1991 South American Athletics Championships |
|---|---|
| Venue |
Manaus
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Carlos Morales |  CHI |
46.55 | ||
| 🥈 | Roberto Bortolotto | BRA |
46.90 | ||
| 🥉 | Henry Aguiar |  VEN |
47.02 |