Oahu Travel Guide
Oahu Hiking Guide
Oahu has some of the best day hiking in the United States — volcanic craters, rainforest waterfalls, ridge trails with ocean views on both sides. Here are the best hikes, difficulty ratings, and tips to make the most of your time on the trails.
Best easy hike
Makapu'u Lighthouse Trail
Best hard hike
Koko Head Crater
Best for views
Lanikai Pillbox at sunrise
Best Hikes on Oahu
Diamond Head Summit Trail
Easy–Moderate1.6 mi round-tripThe most iconic hike in Hawaii. A well-maintained path winds up the inside of a volcanic crater to a summit with sweeping views of Waikiki and the south shore. The trail includes stairs, a narrow tunnel, and a spiral staircase to the final lookout. Despite the challenge, it's doable for most fitness levels and the views are worth every step.
Tip
Book tickets in advance at hawaii.goingtocamp.com ($5/person). Parking fills by 7 AM — take the 77 bus from Waikiki or rideshare. Start before 8 AM to beat the heat and crowds.
Koko Head Crater Trail
Hard1.8 mi round-tripOne of the most demanding short hikes in Hawaii: a former military rail line consisting of 1,048 uneven railroad tie stairs climbing straight up Koko Head crater. No shade, no switchbacks — just vertical gain to 642 feet. The reward is a panoramic view of Hanauma Bay, Maunalua Bay, and the Windward Coast. Popular with locals for fitness training.
Tip
Go early (6–7 AM) before the sun hits the exposed stairs. Bring at least a liter of water. About halfway up, there's a 'bridge' section over a gulch — don't look down if you're afraid of heights.
Lanikai Pillbox Hike
Easy–Moderate1.8 mi round-tripA short but rewarding ridge hike in Kailua with two World War II-era concrete pillboxes and arguably the best views on the island: Lanikai Beach, the Mokulua Islands, and the turquoise water of the Windward Coast below. The trail starts with a steep scramble but levels off. Sunrise here is extraordinary.
Tip
Park on Kaelepulu Drive near the neighborhood entrance — the trailhead is easy to miss. Get there 30 minutes before sunrise for incredible light and minimal crowds. Combine with a Kailua Beach walk afterward.
Manoa Falls Trail
Easy1.5 mi round-tripA lush, rainforest hike through bamboo groves and tropical vegetation to a 150-foot waterfall. One of the few trails in Hawaii that feels genuinely jungle-like. The path is well-maintained but muddy — proper footwear is essential. Located 20 minutes from Waikiki in the Manoa Valley.
Tip
Don't swim in the pool at the base — leptospirosis risk from runoff is real. Wear closed-toe shoes and bring bug spray. The trail is usually open even after rain, though it gets muddier. Morning hikes catch fewer crowds.
Makapu'u Lighthouse Trail
Easy2 mi round-tripA paved, wheelchair-accessible path along the southeastern tip of Oahu to a historic lighthouse overlook. Sweeping views of the Windward Coast, Rabbit Island, and in winter (January–March), humpback whales migrating offshore. One of the best easy hikes on the island, accessible for all ages.
Tip
Go on a weekday morning — the parking lot fills fast on weekends. December through March, bring binoculars for whale watching from the overlook. The sunrise here is exceptional.
Wa'ahila Ridge Trail
Moderate4 mi round-tripA lesser-known ridge trail in the middle of Honolulu with panoramic views of the Ko'olau Mountains and city below. The trail winds through Cook pines and native forest on a narrow ridge. Significantly less crowded than Diamond Head or Koko Head despite being equally rewarding.
Tip
Park at Wa'ahila Ridge State Recreation Area in the St. Louis Heights neighborhood. Wear trail shoes — the path has exposed roots and gets slippery when wet. The second half of the trail has the best views.
Ka'au Crater Trail
Hard5 mi round-tripOne of the most adventurous hikes on Oahu: a muddy, rope-assisted trail through dense rainforest to a hidden crater with three waterfalls. The trail requires scrambling over roots and ropes — not suitable for beginners. The payoff is true wilderness solitude just 30 minutes from Honolulu.
Tip
Only attempt in dry conditions — the trail becomes dangerously slippery when wet. Bring gloves for the rope sections. This is not a solo hike — go with at least one other person. Allow 4–5 hours.
Hiking Tips for Oahu
Start early — always
Most Oahu hikes face direct sun by 9 AM and temperatures reach 85°F+ on exposed ridges. Starting at 6–7 AM means cooler temps, less crowded trails, and better light for photos.
What to bring on every hike
1 liter of water per person minimum, sunscreen, closed-toe shoes (not flip-flops), and a light snack. Most trails have no shade and no water sources. Download offline maps on AllTrails before you go.
Respect closures and private land
Some popular Oahu hikes cross private land and are technically illegal. Stick to state park trails — Diamond Head, Koko Head, Manoa Falls, and Makapu'u are all fully legal and excellent.
After rain = mud, not cancellation
Oahu hikes are often better after rain — waterfalls are fuller and the forest is more lush. Just bring proper footwear and accept that you'll get muddy on jungle trails like Manoa Falls.
Frequently Asked Questions
What is the best hike in Oahu for beginners?
Makapu'u Lighthouse Trail is the best beginner hike — paved, accessible, and rewarding with ocean views. Diamond Head is a close second: slightly more challenging with stairs and a tunnel, but manageable for any fitness level and extremely rewarding. Both are well-maintained state park trails.
Is Koko Head worth it?
Yes — if you're comfortable with a hard workout. The 1,048 stair climb is relentlessly steep with no shade, but the panoramic views of Hanauma Bay and the coastline are among the best on the island. Plan for 30–45 minutes up, 20 minutes down. Locals use it for training — you'll see people doing repeats.
Do I need a permit to hike on Oahu?
Diamond Head requires advance reservation and a $5 fee per person at hawaii.goingtocamp.com. Most other Oahu hikes (Manoa Falls, Makapu'u, Lanikai Pillbox, Koko Head) are free with no reservation needed. Arrive early — parking at popular trailheads fills fast on weekends.
What should I wear hiking in Oahu?
Lightweight, moisture-wicking clothes and trail shoes or sneakers with good grip. Do not hike in flip-flops — even 'easy' trails have uneven terrain. Bring a hat and sunscreen. For jungle trails like Manoa Falls or Ka'au Crater, long pants protect against muddy brush.
Are Oahu hikes safe?
The state park trails (Diamond Head, Koko Head, Manoa Falls, Makapu'u) are well-maintained and safe for visitors. The risks on Oahu hikes are mainly heat exhaustion, dehydration, and flash flooding in stream canyons. Always tell someone your plan, start early, and bring more water than you think you need.
What is the best hike for views?
Lanikai Pillbox at sunrise gives the best views on the island — the Mokulua Islands, Lanikai Beach, and the Windward Coast spread below you in incredible morning light. Diamond Head offers the most famous view (Waikiki and the Pacific). Koko Head gives the best overall panorama of the southeast coast.
Related Oahu Guides
Build a Hiking Day Into Your Oahu Itinerary
Tell AlohaGo which hikes you want to do and we'll plan the perfect day around trail timing, crowds, and what to do before and after.