Halewai via Ainapo Road and Trail is a 20.7 mile lightly trafficked out and back trail located near Pahala, Hawaii, Hawaii that features beautiful wild flowers and is only recommended for very experienced adventurers. The trail is primarily used for hiking, camping, mountain biking, and backpacking and is accessible year-round.

Length20.7 miElevation gain5,534 ftRoute typeOut & back
BackpackingCampingHikingMountain bikingForestViewsWildflowersWildlifeRocky
Description
Waypoints (0)
Contact
Getting There

The road to the trailhead is very hard even for a 4WD. Public access is restricted to the hours of 4:30 am to 8:30 pm.

Hawaii Visitors and Convention Bureau, 2270 Kalakaua Avenue, Suite 801 , Honolulu, HI, 96815, Phone: 800-GOHAWAII, Fax: 808-924-0290

Directions from Kau: Ainapo Road begins at the cattle guard located on the mauka side of Highway 11 in Kau, at approximately the 40.5 mile mark. Open during daylight hours only. Parking at either end on unvegetated sides of road and at trailhead.

Weather
UV Index
Daylight
Reviews (3)
Photos (2)
Recordings (2)
Completed (5)
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Aaron Masser
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarJuly 14, 2019
Hiking

steep, but 3.20 min up with a 4 year old isn't bad. cabin is nice

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Kay Hiker
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarOctober 27, 2018

To say the “road” to the Ainapo trailhead is rough, is like saying magma is hot. Having said that, I could not imagine hiking from the highway to the trailhead. The trail itself is beautiful with both lava types and beautiful scenery. Very well marked with blue ribbons in the trees. We continued up the Ainapo trail to the Mauna Loa summit cabin after a one night stay at the Halewai cabin. That was very arduous. Two-thirds on Aa lava, through fog, rain, and snow. The descent much worse than ascent. Not sure I would recommend this portion of the trail because of the difficulty of the hike and the elements.

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David Lowman
Yellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarYellow StarGray StarGray StarSeptember 21, 2018
Backpacking
First to Review

The 4 Wheel Drive Rd. to the Trail head is very rough, but the trail is very beautiful up to the cabin. I would highly recommend this trail.