The Manoa Falls trail on the island of Oahu, Hawaii, is one of the most popular hikes in the Honolulu area, mainly because it is easily accessible from Waikiki, either via car or city bus, and it is classified as an easy hike. A short drive out of Waikiki towards Manoa Valley and you can be surrounded by a tropical bamboo and rainforest. Many Oahu tour hiking tour operators take their guests here.