Mark Fenton is a national public health, planning, and transportation consultant; former host of the “America’s Walking” series on PBS television, and an adjunct associate professor at the Friedman School of Nutrition Science and Policy at Tufts University. He’s author of numerous books including the best selling Complete Guide to Walking for Health, Weight Loss, and Fitness (Lyons Press, 2nd edition 2008) and Pedometer Walking (2006). He’s been a lead instructor for the University of North Carolina’s National Center for Safe Routes to School, and facilitator for the walkable community workshop series of the National Center for Bicycling and Walking. A former editor of WALKING magazine, Mark was a member of the United States national racewalking team from 1986 to 1991, and competed in the 1984 and 1988 Olympic Trials in the 50-kilometer (31-mile) racewalk. He studied biomechanics at the Massachusetts Institute Technology, where he earned BS and MS degrees, was a researcher at the Olympic Training Center’s Sports Science Laboratory in Colorado Springs, Colorado, and manager of Reebok’s Human Performance Laboratory. Mark has research publications and articles related to exercise science, physical activity promotion, and community level interventions. He’s a vocal advocate for non-motorized transportation, a frequent consultant on community active transportation plans, and recognized authority on public health issues and the need for community, environmental, and public-policy initiatives to encourage more walking, bicycling, and transit use. Certain that he must practice what he preaches, he’s served on his community’s planning board and by-law review committee.