The Haleakalā 6-Line Adventure is a pulse-racing two-hour zipline tour just outside Haleakalā National Park. Soar over canyons, glide across six elevated zipline routes, traverse cliffs up to ~90 feet, and enjoy speeds reaching 45 mph. Throughout the tour, guides share stories of local flora, fauna, and cultural history, set within a native forest restoration backdrop. Requirements: guests must be 8+ years old, and weight between 60-260 lbs. Guests 15 & under need an accompanying adult. Trail walking/hiking is involved on uneven terrain. Must wear closed-toed shoes; reef masks and open footwear are not allowed. Every safety measure is taken—from experienced guide training to equipment inspections.