Hikers crossing river
Hikers in Waimanu Valley
Hikers on Waimanu Valley TrailA strenuous, 9-mile switchback trail with stunning views of the Waipio Valley.
Hikers crossing river
Hikers in Waimanu Valley
Hikers on Waimanu Valley TrailPu'u O Umi Natural Area Reserve, Hawaii · 2 days · 19.8 miles · 6,053 ft gain