6 trails
Waikīkī
0.8-mile round trip to the 762-foot summit of an extinct volcanic crater. Iconic 360° views of Waikiki and the Ko'olau Range. Steep interior concrete staircase — bring water. Best done at sunrise before the heat.
Kailua
Short but steep 3.4km round trip to twin WWII pillboxes on the ridge above Lanikai Beach. The view of the Mokulua islands (two offshore islets) and turquoise water below is one of Oahu's best. Go at sunrise for the best light and to beat the heat and crowds. Combines perfectly with a Lanikai or Kailua beach morning.
North Shore
Easy 4km round trip to two WWII military bunkers perched above the North Shore. The payoff is a front-row seat looking straight down on Pipeline and Sunset Beach — best place on the island to watch big-wave surfing in winter without being in danger. Allow 30 min to the first bunker, 10 more to the second.
Mānoa Valley
1.6-mile round trip through lush rainforest to a 150-foot waterfall. The valley receives 150+ inches of rain annually — truly primordial. Do NOT swim in the pool (bacterial contamination).
East Honolulu
Climb 1,048 railway-tie steps straight up the spine of an extinct volcanic crater — the most demanding short hike on Oahu. 360° views at the top take in Diamond Head, Kailua, and the open Pacific. Not for the faint of heart or knees. Vastly underrated compared to Diamond Head and far less crowded.
East Honolulu
A paved 2.4-mile round-trip trail to a lighthouse perch at 647 feet — the most accessible elevated viewpoint on Oahu, open to all fitness levels. Views sweep across the Windward Coast, Rabbit Island, and the offshore wildlife sanctuary. December through April it becomes the best whale-watching vantage point on the island: humpbacks are frequently visible breaching from the trail without binoculars, no boat required. The cliffs drop directly to tidepools below, and there's almost always something moving in the water. Natural pairing with a Kailua or Hanauma Bay day.