The women's 4 × 400 metres relay at the 1971 Pan American Games was held in Cali on 5 August.Full results It was the first time that the event was held at the Games.
Results Rank Nation Athletes Time Notes Esther Stroy, Mavis Laing, Gwen Norman, Cheryl Toussaint 3:32.45 Beatriz Castillo, Marcela Chibás, Aurelia Pentón, Carmen Trustée 3:34.04 Beverly Franklin, Ruth Williams, Yvonne Saunders, Marilyn Neufville 3:34.05 4 Brenda Walsh, Penny Werthner, Abigail Hoffman, Joyce Sadowick 3:41.23 5 Ana Maquillón, Juana Mosquera, Aida Ortiz, Elsy Rivas 3:50.43
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