The state Na Ala Hele Trails and Access Program will mark National Trails Day tomorrow by installing a boardwalk along a portion of the first half-mile of the Manoa Cliffs hiking trail.

Na Ala Hele program staff, assisted by community volunteers and members of the Hawaiian Ultra Running Team, will install the boardwalk made of recycled plastic lumber mounted on steel posts along several hundred feet of erosion-prone trail. Work will begin at 9 a.m. and be completed by about 5 p.m.

"National Trails Day is a nationwide celebration and recognizes the value and significance of outdoor recreational trails to our community and well-being," said Laura H. Thielen, DLNR chairwoman.