This bill officially designates Route 66 as a National Historic Trail under the National Trails System Act, covering all versions of the historic highway that existed between 1926 and 1985, stretching roughly 2,400 miles from Chicago, Illinois to Santa Monica, California. The Secretary of the Interior would oversee the trail while consulting with affected Native American tribes before taking any actions that would significantly impact them. The bill includes several protections for landowners and existing activities: the government cannot use eminent domain to acquire land for the trail, cannot acquire land more than a quarter-mile from the route without owner consent, and the designation won't create restrictive buffer zones affecting nearby land use. Energy development, production, and transmission along the route remain unaffected, and existing authority to grant easements or rights-of-way stays with current federal, state, and local agencies rather than shifting to new National Park System rules. This means communities, businesses, and property owners along the historic route can expect national recognition and potential tourism benefits without new federal permitting requirements or land-use restrictions being imposed on them.