The Pacific Crest Trail (commonly abbreviated as the PCT, and officially designated as the Pacific Crest National Scenic Trail) is a long-distance hiking and equestrian trail closely aligned with the highest portion of the Sierra Nevada and Cascade mountain ranges, which lie east of the U.S. Pacific coast. The trail's southern terminus is on the U.S. border with Mexico, just south of Campo, California, and its northern terminus on the U.S.–Canada border on the edge of Manning Park in British Columbia; its corridor through the U.S. is in the states of California, Oregon, and Washington.