The Beartooth Highway is an All-American Road in the western United States on a section of U.S. Route 212 in Montana and Wyoming between Red Lodge and the Northeast entrance of Yellowstone National Park.

It crests at Beartooth Pass in Wyoming at 10,947 feet (3,337 m) above sea level, and was called "the most beautiful drive in America," by late CBS News correspondent Charles Kuralt.

Rather than take the long detour down the Clarks Fork Yellowstone River to return to Billings, Sheridan took the advice of an old hunter named Shuki Greer, who claimed intimate knowledge of the Beartooth Mountains.

During the spring of 2005, several large mudslides and rockslides on May 19–20 damaged or destroyed the Montana side of the Beartooth Highway in a dozen places between mile markers 39 and 51.

An estimated 100,000 cubic yards (76,500 m3) of rock was removed from a 0.5-mile-long (0.8 km) section of the highway near the top of the switchbacks, and construction crews drilled down to solid bedrock to create new supports for the road.