

The Tarahumara (Rarámuri) are a Native American people from Chihuahua, Mexico, who have long been famous for running, but there is widespread incredulity about how and why they run such long distances. Aaron Baggish is Associate Professor at Harvard Medical School and Director of the Cardiovascular Performance Program, Massachusetts General Hospital (55 Fruit Street, Boston, Massachusetts 02114, USA). Ian Wallace is Assistant Professor in the Department of Anthropology at the University of New Mexico (502 West Redondo Drive, Albuquerque, New Mexico 87131, USA). Nicholas Holowka is Assistant Professor in the Department of Anthropology at the State University of New York at Buffalo (380 Fillmore Academic Center, Ellicott Complex, North Campus, Buffalo, New York 14261, USA). Silvino Cubesare Quimare is a Tarahumara farmer and runner who lives in Huisuchi and Guachochi, México (Calle Concido, Guachochi, Chihuahua, Mexico 67243). Mickey Mahaffey is a farmer and project coordinator for various support programs for Tarahumara (23 Lake Drive F1, Hendersonville, North Carolina 28739, USA).

Daniel Lieberman is a Professor in the Department of Human Evolutionary Biology at Harvard University (11 Divinity Avenue, Cambridge, Massachusetts 02138, USA ]).
