Big Island Mountain Biking Trails Beginner/Intermediate Walua Road "Pine Trees" (Wawaloli Beach Park, Kona) Beach road Ainapo volcano Pohue Road Mauna Loa Observatory Road (35 miles; easy) Intermediate/Advanced Kilohana Mana Road (Saddle Road, Waimea) Mauna Kea Access Road (32 miles; moderate) Old Puna Road Puu Laau Road (8.4 miles; moderate) Ainapo Road (16 miles; moderate) Advanced/Expert Kulani Mauna Loa Mauna Kea North Kohala 'Upolu Point (Hawi): mountain bike races