Mariposa Beach is a San Clemente City Beach access point in northern San Clemente, CA. The entrance to this long walkway begins where West Mariposa and West Escalones avenues meet on the edge of a housing development (use address 260 W Escalones if mapping it). At the bottom of the walkway is a footbridge for the San Clemente Coastal Trail which goes north to North Beach and south to the San Clemente Pier and beyond.