Backyard Oahu - Oahu's Hiking & Backpacking Trails: Provides comprehensive trail and access details, important warnings, tips, forums, pictures, geography, narratives, and hike recommendations for hiking the ridges and valleys of Oahu's Waianae and Koolau Mountains.
Friends of Haiku Stairs: Visit one of Oahu's most popular trails. Offers stairway history, access status, construction updates, volunteer opportunities, and announcements for the club.
Hawaii Hiking Gallery: Provides a personal collection of pictures from several trails including some of the more difficult hikes.
Na Ala Hele - Hawaii Trail System & Access: Explore the state's official organization which governs access to and the maintenance of the public trail system. Offers detailed information on Na Ala Hele trails.