Born in Piraeus, Greece,[REF] Kefalas earned a bachelor's degree in botany[REF] from Colorado State University in 1978 and then joined the Peace Corps in 1979, serving as an agricultural extension worker in El Salvador [REF].
Kefalas is married; he and his wife Beth have two sons - Harlan, an active-duty U.S. Army soldier who has served in Iraq, Kosovo, and Afghanistan,[REF] and Timothy, the coach of the Colorado State University ultimate frisbee team [REF].