1. Short title This Act may be cited as the Route 66 National Historic Trail Designation Act . 2. Designation of the Route 66 National Historic Trail Section 5(a) of the National Trails System Act ( 16 U.S.C. 1244(a) ) is amended by adding at the end the following: (31) Route 66 National Historic Trail (A) In general The Route 66 National Historic Trail, a trail of approximately 2,400 miles extending from Chicago, Illinois, to Santa Monica, California, and following the route generally depicted on the map entitled _____, numbered _____, and dated _____. (B) Availability of map The map described in subparagraph (A) shall be on file and available for public inspection in the office of the Director of the National Park Service, Department of the Interior, the District of Columbia. (C) Administration The Route 66 National Historic Trail shall be administered by the Secretary of the Interior, acting through the National Park Service. Such administration shall be conducted in a manner that respects and maintains the idiosyncratic nature of the Route 66 National Historic Trail. (D) Land Acquisition The United States may not acquire for the Route 66 National Historic Trail any land or interest in land— (i) outside the exterior boundary of any federally managed area without the consent of the owner of the land or interest in land; or (ii) that extends more than an average of one-quarter of a mile on either side of the trail. (E) No buffer zone created Nothing in this Act, the acquisition of the land or an interest in land authorized by this Act, or the management plan for the Route 66 National Historic Trail shall be construed to create buffer zones outside of the Trail. That activities or uses can be seen, heard, or detected from the acquired land shall not preclude, limit, control, regulate, or determine the conduct or management of activities or uses outside of the trail. .