Lanikai Pillbox Hike – Oahu, Hawaii
The Lanikai Pillbox hike (a.k.a. Kaiwa Ridge) is a favorite on Oahu for visitors and locals alike. It’s a quick climb for scenic views of beautiful Lanikai beach, the Ko’olau mountains, and Kailua town. Last updated: January 2026. Originally published: May 2017. Quick Summary: Lanikai Pillbox Hike Distance: ~0.8 miles round trip to the second…