Hiking & Trails in Oahu
Oahu packs remarkable hiking into a small island: volcanic crater rims above Waikiki, jungle ridges in the Koolau mountains, and waterfall trails a short drive from town. The most famous is Diamond Head, a 1.6-mile round trip to panoramic views over Waikiki — but it now requires an advance reservation for out-of-state visitors. Below are the hiking experiences we currently feature, with the practical details you need.
How to choose
- Diamond Head is the classic first hike — short, paved-ish, huge payoff. Reserve the 6 AM slot for sunrise.
- Want fewer crowds? Look at Koko Head (harder, stairs), Makapuu Lighthouse (easy, paved) or Manoa Falls (jungle, muddy).
- Start early regardless of trail — Hawaii heat builds fast after 9 AM and parking fills up.
- Bring more water than you think: at least 1 liter per person for short trails, 2+ for ridge hikes.
Best time to go
Hiking is year-round. The dry season (April–October) means firmer trails; winter rain makes jungle trails muddy and slippery but waterfalls fuller. Always start before 8 AM for cooler temperatures and easier parking.
Frequently asked questions
Do I need a reservation to hike Diamond Head?
Yes — out-of-state visitors must reserve online up to 14 days in advance via the Hawaii State Parks site. Hawaii residents enter free without a reservation.
What is the easiest scenic hike in Oahu?
Makapuu Lighthouse Trail — a paved 2-mile round trip with ocean views and whale watching in winter. Diamond Head is the most iconic moderate option.
Are Oahu hikes safe for kids?
Diamond Head and Makapuu are family-friendly for kids who can handle stairs and heat. Avoid narrow ridge trails with drop-offs, and never hike after heavy rain.