Kamananui Valley Trail 4 Summary Overall the hike up the Kamananui Valley Trail was not difficult, but still long enough to provide a good work out.  I climbed 1,093 feet over 8.5 miles round-trip.  I saw plenty of lush scenery and a few mountain view.  I was surprised to find that this trail is not … Continue reading Best Hikes On Oahu: The Kamananui Valley Trail