Best Hikes on Oahu: 12 Trails From Beginner to Advanced

Oahu isn’t just about beaches and surf breaks. This island packs some of Hawaii’s most spectacular hiking trails into just 597 square miles. Whether you’re looking for waterfall hikes, beginner-friendly trails, or challenging climbs with jaw-dropping views, the best hikes on Oahu offer something for every fitness level.

I’ve put together this comprehensive guide to help you choose the right trail for your adventure. From the iconic Diamond Head to hidden gems on the North Shore, you’ll find accurate details, honest assessments, and insider tips that only come from real hiking experience. Let’s explore what makes Oahu one of the world’s premier hiking destinations.

Quick Comparison: Best Hikes on Oahu at a Glance

Best Hikes on Oahu for Beginners

Diamond Head Crater Trail

• Distance: 1.6 miles roundtrip
• Elevation Gain: 560 feet
• Time: 1-2 hours

Let’s start with Oahu’s most famous hike. Diamond Head sits right above Waikiki, and yes, it’s touristy—but there’s a reason it’s so popular. This extinct volcanic crater offers 360-degree views of Honolulu, the Pacific Ocean, and the surrounding coastline that absolutely justify the crowds.

What to Expect: The trail is paved for most of the way, with some steep sections and two tunnel passages you’ll walk through. There are 99 steps near the summit, plus a narrow spiral staircase with 76 steps inside an old military bunker. The final push to the top involves a series of stairs, but the panoramic views make every step worthwhile.

Insider Tips:

• Reservations required – Book at gostateparks.hawaii.gov up to 30 days in advance ($5 per person + $10 parking)
• Arrive at 6:30-7:00 AM to beat the heat and crowds
• Bring a flashlight or phone light for the dark tunnels
• The trail opens at 6:00 AM and closes at 4:00 PM
• There’s no shade, so sunscreen is essential

Who It’s Best For: First-time visitors, families with older children (not stroller-friendly), and anyone wanting iconic Oahu views without a difficult climb. This is one of the best hikes on Oahu Hawaii for good reason.

Important Note: The parking lot fills up fast, especially on weekends. If you can’t get a parking reservation, consider taking an Uber or using TheBus route 23.

Makapu’u Lighthouse Trail

• Distance: 2 miles roundtrip
• Elevation Gain: 500 feet
• Time: 1 hour

If you want stunning coastal views with minimal effort, Makapu’u is your trail. This fully paved path winds along Oahu’s southeastern tip, offering unobstructed views of the turquoise Pacific, distant islands, and a historic red-roofed lighthouse.

What to Expect: The trail is actually a paved service road, making it one of the most accessible hikes on the island. You’ll gradually climb upward with the ocean on your left. December through April, this is one of Hawaii’s best spots for whale watching—humpback whales breach and play in the waters below. Bring binoculars if you have them.

Insider Tips:

• No reservation needed – completely free
• Go early morning or late afternoon to avoid the midday heat
• There’s absolutely no shade on this trail
• The parking lot is small and fills by 9 AM on weekends
• Sunrise here is magical, and you’ll have the trail mostly to yourself
• Look for sea life viewfinders at the lookout points

Who It’s Best For: Absolutely everyone. This is perhaps the best hike on Oahu for beginners who want ocean views. It’s suitable for strollers, wheelchairs (with assistance), and all fitness levels.

Important Note: The actual lighthouse is fenced off and not accessible, but the views from the trail are what you came for anyway. On clear days, you can see Molokai and Lanai in the distance.

Lanikai Pillbox (Kaiwa Ridge Trail)

• Distance: 1.8 miles roundtrip
• Elevation Gain: 650 feet
• Time: 1-1.5 hours

Here’s where beginners can get a taste of something more adventurous. The Lanikai Pillbox Trail climbs to old WWII military bunkers (pillboxes) that offer postcard-perfect views of Lanikai Beach, the Mokulua Islands, and the windward coast.

What to Expect: The trail starts steep right from the parking area—there’s no warm-up here. You’ll climb on a mix of dirt path and rocky sections, with some loose gravel that can be slippery. The first pillbox comes at about 20 minutes of hiking, and most people turn around here. The second pillbox is another 10-15 minutes up and offers even better views.

Insider Tips:

• This is the sunrise hike on Oahu—seriously, set your alarm
• Parking is extremely limited in the residential neighborhood
• Be respectful: don’t block driveways or make noise early morning
• Consider parking at Kailua Beach Park and walking 15 minutes to the trailhead
• The trail can be muddy and slippery after rain
• Watch for mountain bikers sharing the trail

Who It’s Best For: Fit beginners who want Instagram-worthy views and don’t mind a steep start. Not recommended for young children or anyone with knee problems.

Important Note: This trail passes through a residential area. The community has asked hikers to be respectful—arrive quietly, don’t litter, and park legally. Some locals have pushed for restricting access, so good behavior keeps this trail open.

Manoa Falls Trail

• Distance: 1.6 miles roundtrip
• Elevation Gain: 800 feet
• Time: 1 hour

Want to see a waterfall without a challenging hike? Manoa Falls delivers a 150-foot cascade at the end of an easy jungle walk. This is one of Oahu’s most popular trails, and it’s absolutely one of the best waterfall hikes on Oahu.

What to Expect: You’ll walk through a lush bamboo forest and tropical rainforest that feels like Jurassic Park. The trail is wide and well-maintained, though it can be muddy year-round—this valley gets over 150 inches of rain annually. The waterfall at the end drops into a small pool, but swimming is prohibited due to leptospirosis risk (a bacterial infection).

Insider Tips:

• $10 parking fee (cash or card) at the trailhead lot
• Arrive before 8:30 AM or after 3:00 PM to avoid tour groups
• Wear closed-toe shoes with good traction—flip-flops are a bad idea
• Bring mosquito repellent; the rainforest is buggy
• The waterfall flow is strongest after recent rain, but the trail gets slippery
• There’s a small café at the parking area for post-hike snacks

Who It’s Best For: Families with children, waterfall lovers, and anyone who wants a rainforest experience without difficulty. This is easily one of the best hikes on Oahu for beginners seeking waterfalls.

Important Note: Flash flooding can occur in this valley during heavy rain. Check the National Weather Service Honolulu forecast before heading out, and never hike here during a flash flood warning.

Best Waterfall Hikes on Oahu

Likeke Falls

• Distance: 1 mile roundtrip
• Elevation Gain: 250 feet
• Time: 45 minutes

While Manoa gets all the attention, Likeke Falls remains a hidden gem that fewer tourists visit. This 15-foot waterfall sits in a peaceful setting with a small pool that’s actually swimmable (though always check recent rain conditions).

What to Expect: The trail is short but can be tricky to find. You’ll start from the Old Pali Road and follow a well-worn but unofficial path through the forest. The trail involves some stream crossings and can be very muddy, especially after rain. Tree roots create natural steps, and you might need to use your hands in a few spots.

Insider Tips:

• Park along the Old Pali Road (the abandoned highway section)
• Look for the trail entrance on the mauka (mountain) side
• Go during dry weather for easier stream crossings
• The waterfall is seasonal—it can be a trickle in summer
• Bring a waterproof bag for your phone and valuables
• Swimming in the pool is refreshing but check for recent rain first

Who It’s Best For: Adventurous beginners who want a less crowded waterfall experience and don’t mind getting their feet wet.

Important Note: This is an unmaintained trail on what may be private property—the legal status is ambiguous. Respect the environment, pack out all trash, and be prepared to turn back if conditions seem unsafe.

Waimea Falls (Waimea Valley)

• Distance: 1.5 miles roundtrip
• Elevation Gain: Minimal
• Time: 45 minutes

Technically, this is more of a botanical garden walk than a hike, but it’s absolutely one of the best waterfall hikes on Oahu North Shore. Waimea Falls is unique because it’s one of the few waterfalls where swimming is allowed (when conditions permit).

What to Expect: This paved path winds through 38 acres of botanical gardens showcasing plants from tropical regions worldwide. You’ll pass labeled plant collections, archaeological sites, and peacocks roaming the grounds. The 45-foot waterfall at the end has lifeguards on duty, and you can swim in the pool.

Insider Tips:

• Admission: $20 adults, $10 children (4-12), free for kids under 4
• Hours: 9:00 AM – 5:00 PM daily
• Swimming is weather-dependent—wear a provided life vest
• Lockers available for $10 (bring your own lock or rent one)
• Book online at waimeavalley.net for small discounts
• Cultural shows and demonstrations happen throughout the day

Who It’s Best For: Families with young children, anyone wanting a guaranteed waterfall swim, and visitors interested in Hawaiian culture and botany. This is perfect for hot days on the North Shore.

Important Note: This is a cultural and conservation site, not just a tourist attraction. The Waimea Valley is managed by a nonprofit organization dedicated to preserving Hawaiian heritage and native plants.

Best Hikes on Oahu North Shore

Ehukai Pillbox Trail

• Distance: 1.7 miles roundtrip
• Elevation Gain: 600 feet
• Time: 1.5 hours

The North Shore isn’t just for surfers. The Ehukai Pillbox Trail (also called Sunset Pillbox) climbs to three old military bunkers with sweeping views of Sunset Beach, Pipeline, and the entire Seven Mile Miracle surf coast.

What to Expect: This trail starts steep and stays that way. You’ll climb on red dirt that becomes slippery when wet. The first pillbox appears after about 15 minutes of solid uphill climbing. Each pillbox has been decorated with colorful graffiti art, and they’re perfect spots to catch your breath and take photos. The third pillbox offers the best views but requires the most effort.

Insider Tips:

• Free parking at Sunset Beach Elementary School (weekends/holidays) or along Pupukea Road
• Sunset here is spectacular, but bring a headlamp for the descent
• The trail is very exposed—wear sunscreen and bring plenty of water
• Go in winter months to watch big wave surfing at Pipeline and Sunset
• The red dirt stains clothing—wear dark colors
• Arrive early as parking fills up, especially in winter

Who It’s Best For: Intermediate hikers who want coastal views without driving to the east side. Sunset watching here is unbeatable.

Important Note: Respect the school property when parking. Don’t park in teacher spaces or block any access. The community allows hikers to use the lot, so don’t give them a reason to close it.

Ka’ena Point Trail

• Distance: 5 miles roundtrip
• Elevation Gain: Minimal
• Time: 2-3 hours

Ka’ena Point is where Oahu’s western tip meets the ocean. This flat coastal trail leads to a protected wildlife sanctuary where albatrosses nest and Hawaiian monk seals sometimes rest on the beach.

What to Expect: This is a former railroad route, so it’s mostly flat and easy walking. You’ll hike along dramatic coastline with waves crashing against lava rocks. The landscape is dry and stark—no rainforest here. At the point, you enter a predator-proof fence that protects nesting seabirds. From November to July, you might see Laysan albatrosses with their chicks.

Insider Tips:

• Access from either Yokohama Bay (west side) or Mokuleia (north side)
• The west side route is more popular and has better facilities
• Start early morning to avoid the midday heat
• Bring at least 2 liters of water per person—there’s no shade
• No drones allowed in the wildlife sanctuary
• Watch for whales offshore in winter months
• The return trip can feel longer since you’re retracing your steps

Who It’s Best For: Nature lovers, bird watchers, and anyone wanting a long, flat coastal walk. This is one of the best hikes on Oahu North Shore for experiencing wild Hawaii.

Important Note: The wildlife sanctuary is managed by the Hawaii Department of Land and Natural Resources. Stay on the trail and never approach monk seals or nesting birds—federal law requires you stay at least 50 feet away.

Pupukea Summit Trail (Pu’u O Mahuka)

• Distance: 2 miles roundtrip
• Elevation Gain: 400 feet
• Time: 1-1.5 hours

This lesser-known trail takes you through Norfolk pine forests to panoramic views of the North Shore coastline. It’s peaceful, less crowded, and offers a completely different ecosystem than most Oahu hikes.

What to Expect: You’ll walk through shaded forest on mostly gentle terrain with some rooty sections. The trail can be muddy after rain, and navigation can be tricky in places—download the trail on AllTrails beforehand. The summit area opens to views of Waimea Bay and the coastline stretching toward Ka’ena Point.

Insider Tips:

• Park near the Pu’u O Mahuka Heiau (historic Hawaiian temple)
• Visit the heiau before or after your hike—it’s culturally significant
• Trail markings can be faint; stay on the main path
• Best hiked in dry weather to avoid slippery mud
• Bring bug spray; mosquitoes are present in the forest
• Combine with a visit to Waimea Valley or Sunset Beach

Who It’s Best For: Hikers seeking solitude and a different North Shore experience. This trail sees a fraction of the traffic compared to Ehukai Pillbox.

Important Note: The Pu’u O Mahuka Heiau is Oahu’s largest temple site and a sacred place. When visiting, be respectful—don’t climb on structures, and consider leaving a small offering (lei, ti leaves) as a sign of respect.

Moderate to Challenging Hikes

Koko Crater Trail (Koko Head Stairs)

• Distance: 1.8 miles roundtrip
• Elevation Gain: 1,048 feet
• Time: 1.5-2 hours

This isn’t a hike—it’s a stairmaster from hell. The Koko Crater Trail climbs 1,048 railroad ties straight up an extinct volcanic cone. It’s brutal, it’s relentless, and the views from the top are absolutely worth the suffering.

What to Expect: You’ll climb old railway ties that were used during WWII to transport supplies to a military lookout at the summit. The “stairs” are uneven, some are missing, and about halfway up there’s a terrifying bridge section over a gully (you can take a bypass trail around it). The final push is steeper than the rest, and you’ll question your life choices. At the top: 360-degree views of Hanauma Bay, Diamond Head, and Southeast Oahu.

Insider Tips:

• Start at sunrise to avoid crowds and heat—seriously, this is crucial
• Free parking at Koko Head District Park
• Bring 2 liters of water minimum per person
• Wear gloves if you want to use your hands on the ties
• Take breaks—there’s no shame in stopping every 50-100 steps
• The bypass trail around the bridge is on the right side going up
• Download is harder on the knees than going up

Who It’s Best For: Fitness enthusiasts and anyone who wants to earn their views. This is a workout, not a casual hike. If you can’t do several flights of stairs, skip this one.

Important Note: This trail has no shade whatsoever. People have suffered heat exhaustion here. If you arrive and it’s already hot, come back another day at sunrise. Check Hawaii Pacific Health resources on heat safety.

Crouching Lion Trail

• Distance: 4 miles roundtrip
• Elevation Gain: 2,000 feet
• Time: 2-3 hours

The Crouching Lion rock formation is visible from the highway, but hiking to it and beyond offers some of Oahu’s most dramatic windward coast views. This trail has exposure, steep sections, and requires careful footing.

What to Expect: The trail starts behind the Crouching Lion food truck area and immediately goes up. You’ll climb through forest using roots and rocks as handholds in places. The trail to the “lion” formation involves some scrambling and exposure to drop-offs. Many hikers stop at the lion viewpoint, but continuing up the ridge leads to even better panoramic views of Kahana Bay and the Ko’olau Range.

Insider Tips:

• Park at the Crouching Lion Inn area or nearby pullouts
• Dry weather only—this trail is dangerous when wet
• The upper sections require scrambling; use your hands
• Not recommended if you’re afraid of heights
• Turning around at the lion rock is perfectly fine
• Best views are in morning light for photography
• Cell service is spotty once you’re on the ridge

Who It’s Best For: Experienced hikers comfortable with exposure and scrambling. This isn’t technically difficult climbing, but it’s intimidating if you’re not used to heights.

Important Note: This trail has seen serious accidents. Know your limits and turn back if conditions feel unsafe. The official recommendation is that this trail is for experienced hikers only. Always check current trail conditions on AllTrails before attempting.

Kuliouou Ridge Trail

• Distance: 4.5 miles roundtrip
• Elevation Gain: 1,800 feet
• Time: 2.5-3 hours

If you want a ridge hike with less exposure than some of Oahu’s more dangerous trails, Kuliouou delivers. This steady climb rewards you with views across East Oahu, the Ko’olau Range, and even glimpses of the windward side.

What to Expect: The trail starts in residential Hawaii Kai and climbs through ironwood forest before opening onto a ridge. You’ll switchback up steadily gaining elevation. The upper ridge section offers panoramic views but has some narrow sections with drop-offs on both sides. The summit area has a shaded picnic table—a perfect lunch spot.

Insider Tips:

• Free parking in the residential area near the trailhead
• Be respectful of the neighborhood; don’t block driveways
• The trail is mostly shaded in the lower sections
• Upper ridge can be windy—bring a light jacket
• Muddy after rain but generally well-maintained
• Great for sunset if you bring headlamps for descent
• Less crowded than Diamond Head or Koko Crater

Who It’s Best For: Intermediate hikers wanting ridge views without extreme exposure. This is a solid workout with rewarding vistas.

Important Note: Trail maintenance is done by volunteers. If you see a trail maintenance day posted on Hawaiian Trail and Mountain Club, consider joining to give back.

Advanced Hikes for Experienced Hikers

Olomana Three Peaks Trail

• Distance: 4.7 miles roundtrip
• Elevation Gain: 1,600 feet
• Time: 4-5 hours

Olomana is Oahu’s most dangerous legal trail. The first peak requires scrambling up near-vertical rock faces using ropes. The second and third peaks involve exposed knife-edge ridges and more rope-assisted climbing. People have died here. I’m not exaggerating.

What to Expect: The trail starts innocently enough through bamboo forest, but quickly becomes a steep dirt scramble. Reaching the first peak requires pulling yourself up muddy near-vertical sections using fixed ropes and tree roots. The views from Peak 1 are incredible—Ko’olau Range, Windward Oahu, and the ocean. Most hikers stop here. Peaks 2 and 3 involve exposed ridge walking with significant consequences for a fall.

Insider Tips:

• Experienced hikers only—this is not your first rodeo trail
• Go in dry conditions only; wet rocks are deadly
• Wear gloves for rope sections and better grip
• Bring a small backpack for hands-free climbing
• Start early morning before afternoon clouds/rain roll in
• Fixed ropes are maintained by volunteers—inspect before trusting them
• Many hikers turn around at Peak 1, and that’s completely reasonable

Who It’s Best For: Experienced hikers comfortable with exposure, scrambling, and route-finding. You need upper body strength for rope sections and no fear of heights.

Important Note: Multiple fatalities have occurred on this trail. In 2018, a hiker fell to his death from the third peak. The Honolulu Fire Department conducts rescues here regularly. If weather looks questionable, skip it. If the ropes look worn, turn back. Check Hawaii News Now for recent trail incidents before attempting.

Tom-Tom Trail (Mauna Kuwale)

• Distance: 6.5 miles roundtrip
• Elevation Gain: 2,100 feet
• Time: 4-5 hours

The Tom-Tom Trail is one of Oahu’s most stunning ridge hikes, offering views of both the North Shore and Makaha Valley. This trail involves steep climbing, narrow ridge walking, and sections where you’re literally on the spine of the mountain.

What to Expect: Starting from the Pupukea area, you’ll climb steeply through forest before emerging onto an exposed ridge. The trail follows the ridgeline with drop-offs on both sides in places. The views are phenomenal—on one side, you see North Shore surf breaks; on the other, the Waianae Range and western valleys. The final push to the summit involves some scrambling over rocky sections.

Insider Tips:

• Park near Pupukea Road and look for the unmarked trailhead
• Trail is poorly marked—download GPS track beforehand
• Go in clear weather; clouds obscure views and make navigation difficult
• The ridge is extremely exposed to wind
• Bring 3 liters of water—this is a long, strenuous hike
• 午before noon to avoid afternoon weather changes
• Tell someone your hiking plan and expected return time

Who It’s Best For: Very experienced hikers comfortable with exposure and navigation. This trail requires good fitness, route-finding skills, and comfort with heights.

Important Note: This trail crosses private property and the legal status is uncertain. Hikers use it regularly, but technically you’re trespassing. Hike respectfully and at your own risk. The Hawaii Division of Forestry and Wildlife does not maintain this trail.

Essential Tips for Hiking in Oahu

Best Time to Hike (Weather & Crowds)

Time of Day:

• Sunrise hikes (6:00-7:00 AM): Beat crowds, avoid heat, best lighting for photos
• Midday (10:00 AM-2:00 PM): Hottest, most crowded—avoid if possible
• Late afternoon (3:00-5:00 PM): Cooler temps, fewer people, but bring headlamp for descent

Seasons:

• Summer (May-October): Less rain, calmer conditions, hotter temperatures, more tourists
• Winter (November-April): More rain, muddy trails, whale watching season, North Shore surf

Weather Patterns:

• Trade winds bring afternoon clouds to windward (east) side
• North Shore hikes are driest in summer; wet and muddy in winter
• Check National Weather Service Honolulu for flash flood warnings
• Trails dry out quickly after rain due to volcanic soil

Crowd Avoidance:

• Weekdays are significantly less crowded than weekends
• Reservation trails (Diamond Head) book up fast—reserve 30 days early
• School breaks (spring, summer, winter) bring more families

What to Pack for Best Hikes on Oahu

Essentials (Every Hike):

• Water: 1-2 liters minimum per person (more for long/hot hikes)
• Sun protection: Reef-safe sunscreen, hat, sunglasses
• Closed-toe shoes: Trail runners or hiking boots with good traction
• Phone: For emergencies, photos, and offline maps (download AllTrails)
• Small first aid kit: Band-aids, blister treatment, pain relievers

Recommended:

• Light rain jacket: Weather changes quickly in Hawaii
• Headlamp: Essential if hiking near sunset
• Snacks: Energy bars, fruit, trail mix
• Bug spray: Mosquitoes in forested areas
• Small towel: For waterfall hikes or sweat
• Zip-lock bags: Keep phone/wallet dry

For Challenging Hikes:

• Gloves: For rope sections and scrambling
• Trekking poles: Help on steep descents
• Emergency whistle: Three blasts signals distress
• Portable charger: Keep phone charged for navigation

Leave at Home:

• Glass bottles (bring reusable water bottles)
• Drones (illegal in most parks and preserves)
• Bluetooth speakers (respect nature and other hikers)

Safety & Trail Etiquette

Hiking Safety:

• Never hike alone on advanced trails like Olomana
• Tell someone your hiking plan and expected return time
• Turn back if weather deteriorates or trail conditions are unsafe
• Respect warning signs and trail closures
• Flash floods can occur suddenly—avoid stream crossings during rain
• Leptospirosis bacteria lives in freshwater streams—don’t drink stream water or swim in stagnant pools

Trail Etiquette:

• Stay on marked trails to prevent erosion
• Yield to uphill hikers (they have the harder job)
• Leave no trace: Pack out all trash, even biodegradable items
• Don’t stack rocks (cairns)—it disrupts navigation and ecosystem
• Keep noise down: Respect other hikers’ nature experience
• Share the aloha spirit: Greet fellow hikers, offer water if someone’s in need

Wildlife & Plants:

• Don’t touch or feed wild animals
• Monk seals and sea turtles: Federal law requires 50-foot distance
• Nesting seabirds: Stay on trails in protected areas like Ka’ena Point
• Native plants: Look but don’t pick

Cultural Respect:

• Heiau (temples) are sacred sites—don’t climb on structures
• Ti leaves and leis left on trails are offerings—don’t disturb
• Ask permission before entering if you feel uncertain about a site
• Learn about Hawaiian cultural practices through Office of Hawaiian Affairs

Permits & Parking Information

Trails Requiring Reservations:

• Diamond Head: Advance reservation required at gostateparks.hawaii.gov ($5 per person + $10 parking)

Paid Parking:

• Manoa Falls: $10 at trailhead
• Waimea Valley: $20 admission includes the waterfall trail

Free Parking (Can Fill Up):

• Makapu’u Lighthouse: Small lot, arrive early
• Koko Crater: Koko Head District Park
• Lanikai Pillbox: Very limited street parking (be respectful of residents)

Parking Tips:

• Arrive before 8:00 AM for popular trails on weekends
• Never block driveways in residential areas
• Don’t leave valuables visible in your car—break-ins happen
• Use TheBus when possible to avoid parking hassles

Trail Closures:

• Check Hawaii State Parks for current closures
• Heavy rain triggers flash flood warnings—postpone hikes when issued
• Some trails close seasonally for bird nesting (Ka’ena Point areas)

“Note: All prices are indicative and may change based on season, or establishment policy. Confirm current rates locally before visiting.”

Conclusion

Oahu delivers some of the best hiking in Hawaii, with trails ranging from easy beachside strolls to heart-pounding ridge climbs. Whether you’re chasing waterfalls, seeking North Shore coastal views, or pushing your limits on advanced peaks, this island has a trail calling your name.

Start with the beginner-friendly options like Diamond Head or Makapu’u to get your bearings, then work your way up to the more challenging adventures. Remember: the best hike on Oahu is the one that matches your fitness level and interests while keeping you safe.

Pack plenty of water, start early, respect the land, and embrace the aloha spirit. These trails are gifts—treat them with care so future generations can enjoy them too.

Ready to lace up your hiking boots? Oahu’s mountains are waiting.

Frequently Asked Questions About Best Hikes on Oahu