400 m, Men
| Competition | 2021 South American Youth Games |
|---|---|
| Venue |
Rosario
 ARG
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Vinícius Galeno |  BRA |
47.43 | ||
| 🥈 | Ignacio Cabrera | ARG |
49.48 | ||
| 🥉 | Emanuel Guzmán |  VEN |
50.52 |
| Competition | 2021 South American Youth Games |
|---|---|
| Venue |
Rosario
ARG
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Vinícius Galeno | BRA |
47.43 | ||
| 🥈 | Ignacio Cabrera | ARG |
49.48 | ||
| 🥉 | Emanuel Guzmán | VEN |
50.52 |