400 m, Men
| Competition | 2011 South American Athletics Championships |
|---|---|
| Venue |
Buenos Aires
 ARG
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Kléberson Davide |  BRA |
46.74 | ||
| 🥈 | Geiner Mosquera |  COL |
47.19 | ||
| 🥉 | Luís Ambrósio | BRA |
47.57 |