From Missoula the TransAm Trail turns southward, following the footsteps of Lewis and Clark through the Bitterroot Valley. It then crosses a succession of passes, one over the Continental Divide, to Dillon, the heart of Montana's sheep country. The Big Hole Battlefield National Monument is along the way. The route continues through the Alder Gulch into Virginia City, site of the state's first great gold strike. Section 4 ends at West Yellowstone, gateway to Yellowstone National Park. ABOUT ADVENTURE CYCLING MAPS Adventure Cycling maps are created by cyclists, for cyclists, and they are some of the best available for those in search of discovery and adventure in North America. The maps reflect the association's research as well as suggestions from thousands of cyclists who have explored the Adventure Cycling Route Network. Adventure Cycling develops the best cross-country, loop, coastal, and inland cycling routes available, with turn-by-turn directions, detailed navigational instructions for the tricky sections, and elevation profiles in the high country. The maps are waterproof and designed to fit in a handlebar-bag window or jersey pocket. The maps provide information specifically for cyclists: the location of bike shops, sources for food and water, and listings of overnight accommodations including camping facilities, small hotels, and cyclists-only lodging. Missoula, Montana, based Adventure Cycling Association is a nonprofit organization. It's mission is to inspire and empower people to travel by bicycle. Established in 1973 as Bikecentennial, it is the premier bicycle-travel organization in North America with more than 35 years of experience and 47,000 members. The Adventure Cycling Route Network features rural and low-traffic bicycling routes through some of the most scenic and historically significant terrain in North America. The organization now has a 42,180-mile network of routes available on its more than 90 maps. Learn more about the organization by visiting their website: www.adventurecycling.org . Cycling Maps