400 m, Men
| Competition | 1989 South American Athletics Championships |
|---|---|
| Venue |
Medellín
 COL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Sérgio de Menezes |  BRA |
45.88 | ||
| 🥈 | Wilson Cañizales | COL |
45.91 | ||
| 🥉 | Roberto Bortolotto | BRA |
46.38 |