Michael “Mac” McCoy intends to retire from the 50,000-member Adventure Cycling Association at the end of September, having served the organization almost continually since December 1975. That’s when he and his future wife Nancy were hired as the Western Field Directors for the Bikecentennial summer of 1976. Two decades later, Mac researched and mapped the Great Divide Mountain Bike Route during the snowless months of late 1994 through 1997. A more recent accomplishment was writing, along with designer and BIkecentennial/Adventure Cycling co-founder Greg Siple, America’s Bicycle Route: The Story of the TransAmerica Bicycle Trail. The heralded coffee table book celebrates the 40th anniversary of both the association and its flagship cross-country route.