If driving, proceed mauka on Round Top Drive to the vicinity of 4005 Round Top Drive. Look for the trailhead sign and a small parking lot on the left hand side of the road. You may park here. This is also the parking area for Manoa Cliff Trailhead, which is on the mauka side of the street.
Please note that the Moleka Trail (in yellow) is part of the Honolulu-Mauka Trail Network, comprising of 18 interconnected trails (in turquoise). The system may be accessed via the Makiki Arboretum Trail (dark blue) as part of an extended hike. The shortest route from the Makiki Arboretum Trail to the Moleka trailhead is 1.1 miles.
The Moleka Trail starts at a signed junction by a small parking lot along Round Top Dr. Descend gradually through bamboo, paralleling Moleka Stream, but well above it. Underfoot are cinders from the eruption of Sugarloaf (Pu`u Kakea). Climb briefly on two switchbacks up the side of Pu`u Kākea on a narrow trail. Reach the end of the Moleka Trail at a signed junction with the Makiki Valley Trail.