400 m, Men
| Competition | 2026 South American Games |
|---|---|
| Venue |
Rosario, Santa Fe, and Rafaela
 ARG
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Alison dos Santos |  BRA |
44.61 | ||
| 🥈 | Javier Gómez |  VEN |
45.48 | ||
| 🥉 | Martín Kouyoumdjian |  CHI |
45.99 |