Old Mamalahoa Highway is a 3.44-mile out-and-back foot trail in Hawaiʻi Volcanoes National Park, Hawaii. Difficulty: moderate, estimated from distance.
Open Old Mamalahoa Highway on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Hawaiʻi Volcanoes. Hawaiʻi Volcanoes has permits or reservations for some areas: see the Hawaiʻi Volcanoes page for what's needed.