This gorgeous Byway adventure, said to be the most diverse stretch of road in Idaho, boasting everything from sky-piercing peaks to captivating craters along its course, will be a thrill for every mountain biker to ride. As you make the 140-mile drive through ever-changing landscapes, you can stop to explore mining towns, ghost towns, quaint places where residents live a timeless western lifestyle that has not changed a great deal in a couple of centuries, and the unique geology created when Idaho lay at the edge of the Pacific Ocean with Australia just off its coast.