4 x 400 m Relay, Men
| Competition | 2021 South American Athletics U20 Championships |
|---|---|
| Venue |
Lima
 PER
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Brazil |  BRA |
3:13.21 | ||
| João Ribeiro | — | ||||
| Leonardo Santos | — | ||||
| Pedro Tombolim de Souza | — | ||||
| Vinícius Galeno | — | ||||
| 🥈 | Ecuador |  ECU |
3:15.58 | ||
| Katriel Ángulo | — | ||||
| Miguel Maldonado | — | ||||
| Steeven Salas | — | ||||
| Alan Minda | — | ||||
| 🥉 | Argentina |  ARG |
3:18.92 | ||
| Bruno De Genaro | — | ||||
| Bautista Diamante | — | ||||
| Matías Reynaga | — | ||||
| Pedro Emmert | — |