400 m, Women
| Competition | 1975 South American Athletics Championships |
|---|---|
| Venue |
Rio de Janeiro
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Alejandra Ramos |  CHI |
55.7 | ||
| 🥈 | Valdéa Maria Chagas | BRA |
55.9 | ||
| 🥉 | Miriam Inácio da Silva | BRA |
56.0 |