400 m, Men
| Competition | 2021 South American Athletics U20 Championships |
|---|---|
| Venue |
Lima
 PER
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Vinícius Galeno |  BRA |
48.40 | ||
| 🥈 | Miguel Maldonado |  ECU |
48.73 | ||
| 🥉 | Martín Kouyoumdjian |  CHI |
48.90 |