4 x 400 m Relay, Women
| Competition | 1977 South American Athletics Championships |
|---|---|
| Venue |
Montevideo
 URU
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Brazil |  BRA |
3:49.7 | ||
| Tânia Miranda | — | ||||
| Sueli Machado | — | ||||
| Joyce Dos Santos | — | ||||
| Inoilde Souza Cruz | — | ||||
| 🥈 | Argentina |  ARG |
3:53.4 | ||
| Beatriz Allocco | — | ||||
| Marcela López | — | ||||
| Silvia Augsburger | — | ||||
| Graciela Escalada | — | ||||
| 🥉 | Venezuela |  VEN |
3:55.2 | ||
| Adriana Marchena | — | ||||
| Elsa Antúnez | — | ||||
| Yaneth Carvajal | — | ||||
| Lourdes Nicola | — |