To amend the National Trails System Act to designate the Old Spanish Trail and the Northern Branch of the Old Spanish Trail for potential inclusion into the National Trails System, and for other purposes.

Amends the National Trails System Act to require the Secretary of the Interior to study for designation as a national scenic trail: (1) the Old Spanish Trail, beginning in Santa Fe, New Mexico, proceeding through Colorado and Utah and ending in Los Angeles, California; and (2) the Northern Branch of such trail, beginning near Espanola, New Mexico, proceeding through Colorado, and ending near Crescent Junction, Utah.