400 m, Men
| Competition | 2018 South American Games |
|---|---|
| Venue |
Cochabamba
 BOL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Lucas Carvalho |  BRA |
45.61 | ||
| 🥈 | Yilmar Herrera |  COL |
45.64 | ||
| 🥉 | Winston George |  GUY |
45.67 |
| Competition | 2018 South American Games |
|---|---|
| Venue |
Cochabamba
BOL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Lucas Carvalho | BRA |
45.61 | ||
| 🥈 | Yilmar Herrera | COL |
45.64 | ||
| 🥉 | Winston George | GUY |
45.67 |