National Historic Trail is a designation for a protected area in the United States containing historic trails and surrounding areas. They are part of the National Trails System.
National Historic Trails were authorized under the National Parks and Recreation Act of 1978 (Public Law 95-625), amending the National Trails System Act of 1968 (Public Law 90-543), which had introduced National Scenic Trails and National Recreation Trails. National Scenic Trails and National Historic Trails may only be designated by an act of Congress.
National Historic Trails are designated to protect the remains of significant overland or water routes to reflect the history of the nation. Most of them are scenic highway routes and are not hiking trails, although they provide opportunities for hiking and other outdoor activities along their routes. Only one is a water trail, Captain John Smith Chesapeake National Historic Trail.