Halemauʻu Trail is a 17.82-mile out-and-back foot trail in Haleakalā National Park, Hawaii. It climbs 2,115 ft to a high point of 7,969 ft. Difficulty: very strenuous, from the NPS hiking-rating formula.

Halemau‘u Trail OPEN
2.2 miles (3.6 km) round trip. 400 ft (123 m) elevation change.
Read the official NPS description
The Park Service lists a shorter hike along this trail: Halemau‘u Trail OPEN, 2.2 mi round trip. The whole mapped trail is 17.82 mi.
Open Halemauʻu Trail on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Haleakalā. Haleakalā has permits or reservations for some areas: see the Haleakalā page for what's needed.