Adventurers seeking the adrenaline rush and physical rewards of world-class mountain biking set against stunning and exotic landscapes, look no further. Rob Story, regular contributor to Outside, knows where in the world to go for the best fat-tire, single-track experiences imaginable, from Thailand to the Hawaiian Islands, from Cape Town to Sun Valley, from the Olympic Peninsula to the Atlas Mountains of North Africa. While much of the best riding is found in the United States, Story spices his top 25 trips with foreign riding in some unlikely and untrammeled spots. No matter where he sends mountain bikers, their concerns are addressed, from where to find gear, to which outfitters to trust, to honest appraisals of trail difficulty.