400 m, Women

Competition	1989 South American Athletics U20 Championships
Venue	Montevideo URU
Held	—
Status	Medal
Competitors	3
Countries	2

Pos	Athlete(s)	Country	Mark
🥇	Claudete de Piña	BRA	54.89
🥈	Luciana Mendes	BRA	56.78
🥈	Luciana Mendes	BRA	55.49
🥉	Claudia Riquelme	CHI	55.59