400 m, Men
| Competition | 2004 South American Athletics U23 Championships |
|---|---|
| Venue |
Barquisimeto
 VEN
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Andrés Silva |  URU |
45.80 | ||
| 🥈 | Luis Luna | VEN |
46.03 | ||
| 🥉 | Luís Ambrósio |  BRA |
46.46 |