Koko Head Ridge hike

Originally built to haul personnel and supplies to summit radar stations, the defunct railway tackles roughly 1,000 feet of elevation in just three-quarters of a mile. The route is a strenuous, sun-exposed climb up steep, uneven ties with zero shade from midday heat. Partway up, a short elevated trestle section suspends the path over open air, though an optional bypass trail provides a detour around the drop. Reaching the peak reveals sweeping vantage points across Hawaii Kai and Diamond Head.