400 m, Men
| Competition | 2023 South American Athletics U20 Championships |
|---|---|
| Venue |
São Paulo
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Vinícius Galeno | BRA |
46.32 | ||
| 🥈 | Elias Santos | BRA |
46.64 | ||
| 🥉 | Dusthin Morquecho |  ECU |
47.51 |