West (or Leeward) Oahu has the island's fledgling "second city"—the planned community of Kapolei, where the government hopes to attract enough jobs to lighten inbound traffic to downtown Honolulu—then continues on past a far-flung resort to the Hawaiian communities of Nanakuli and Waianae, to the beach and the end of the road at Keaweula, aka Yokohama Bay.
A couple of cautions as you head to the leeward side: Highway
93 is a narrow, winding, two-lane road notorious for accidents. There's an abrupt transition from freeway to highway at Kapolei, and by the time you reach Nanakuli, it's a country road, so slow down. Car break-ins and beach thefts are common here.