Choose an approach and plan access
From ʻĀinapō Trailhead, the hike is 10.2 miles one way: 2.7 miles to lower ʻĀinapō Cabin, then another 7.5 to the summit cabin. A second approach starts at the trailhead past Mauna Loa Observatory, on the Daniel K. Inouye Highway side; it is about 5.9 miles from the Observatory to the cabin. The ʻĀinapō route requires Kapāpala Ranch gate access and high-clearance 4WD for a rough, eight-mile road with limited parking. You need a backcountry permit for the summit cabin; the lower state-run ʻĀinapō Cabin requires its own permit if you stay there. Confirm route and road access before setting out.
