400 m, Men
| Competition | 2018 South American Athletics U18 Championships |
|---|---|
| Venue |
Cuenca
 ECU
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Caio de Almeida |  BRA |
48.20 | ||
| 🥈 | Lucas Vilar | BRA |
48.34 | ||
| 🥉 | Alexander Salazar |  PAN |
49.64 |