19.1 miles:
44 minutes
Two-lane SR 550 ascends more than 4,000 feet from the town of Waimea up along a steep ridge to Pu‘u O Kila Lookout, offering breathtaking views of Waimea Canyon on one side and the ruggedly beautiful Na Pali Coast on the other. The route, also known as Waimea Canyon Drive and Kōke‘e Road, twists and turns the higher it climbs.