400 m, Men
| Competition | 1986 South American Athletics U20 Championships |
|---|---|
| Venue |
Quito
 ECU
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Washington Rodrigues |  BRA |
47.82 | ||
| 🥈 | Sérgio Moreira | BRA |
48.78 | ||
| 🥉 | Milton Alvear |  PAN |
49.24 |