The Koko Crater Trail is a popular hiking trail located on the island of Oahu, Hawaii. It features a steep ascent of approximately 1,048 steps, which were originally part of a military railway. The trail offers stunning views of the surrounding landscape, including the Pacific Ocean and the nearby Hanauma Bay. The hike is about 1.8 miles round trip and is considered challenging due to its elevation gain. Hikers should be prepared for a strenuous workout and should bring plenty of water. The trail is open year-round, making it a favorite destination for both locals and tourists seeking adventure in the Hawaiian outdoors.