4 x 100 m Relay, Women
| Competition | 1978 South American Athletics U20 Championships |
|---|---|
| Venue |
Sao Paulo
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Chile |  CHI |
48.1 | ||
| Cecilia Rodríguez | — | ||||
| María Labarca | — | ||||
| Daisy Salas | — | ||||
| Carla Herencia | — | ||||
| 🥈 | Brazil | BRA |
48.1 | ||
| Maria José Ferreira dos Santos | — | ||||
| Célia Da Costa e Silva | — | ||||
| Maria Nogueira | — | ||||
| Elizabeth Montesano | — | ||||
| 🥉 | Argentina |  ARG |
48.2 | ||
| Susana Planas | — | ||||
| Marisol Besada | — | ||||
| Claudia Rodríguez | — | ||||
| Beatriz Capotosto | — |