Far more famous for its winter adventures, Park City is a gem in the fall, too. Take to the air on Park City’s zip lines. Check out the mountains on bike or on foot. For mountain bikers, Park City’s internationally-recognized trails are pure heaven and rock climbers will find their niche out in the Wasatch Mountains. The ski lift is one of the best spots for leaf-peeping. You can also do a high-speed descent though the fall colors via an alpine slide, one of the longest slides in the world.