There are no user or entry fees for El Camino Real de Tierra Adentro National Historic Trail. Nominal fees may be charged at some trail-related federal, state, or locally owned historic sites and interpretive facilities.
The National Park Service and Bureau of Land Management are participating in the new Interagency Pass Program, which was created by the Federal Lands Recreation Enhancement Act and authorized by Congress in December 2004. Other participating agencies include the USDA Forest Service, Fish and Wildlife Service, and Bureau of Reclamation.
Information about purchasing the new America the Beautiful Passes (as of January 1, 2007) is available on this website. There are no fees for visiting the national historic trails, but some trail resources and sites are on federal lands managed by other agencies that do collect these fees.