Rock climbing on the Hawaiian island of Oahu is currently closed due to an accident that occurred a number of years ago. With this restriction in place, climbers stranded in paradise can either entertain themselves with a bit of jungle bouldering (check out Unrealhawaii.com) or leave the beach to explore Oahu's varied topography on a well-developed network of local hiking trails. Hiking in Hawaii has gained a lot popularity in the last decade and there are now guidebooks, maps and websites dedicated to this away-from-the-sand activity.
(Edited on 3/2/15- A local climber reached out to us indicating that two of the three main areas on the island have since reopened to climbing.)