The Top 10 Best Hikes in Oahu
Oahu, the “Gathering Place,” is a paradise for hiking enthusiasts seeking diverse landscapes and unforgettable vistas.
With pristine beaches, lush rainforests, volcanic craters, and breathtaking cliffs, the island offers a remarkable playground for adventurers of all skill levels.
Whether you’re a seasoned trekker chasing heart-pounding ridges or a beginner searching for peaceful trails, Oahu provides a range of hikes from easy strolls to challenging hikes that require significant physical effort.
This guide to Oahu’s best hikes has something for everyone. Pack your sturdy footwear, sunscreen, and a sense of adventure—here are the top 10 must-visit hikes in Oahu, complete with highlights and helpful tips.
Diamond Head State Monument (Leʻahi) Summit Trail
Highlights
- Ascend an iconic volcanic crater within Diamond Head State Monument, offering panoramic views of Honolulu and the sparkling Pacific Ocean.
- Explore historic military bunkers and the summit’s navigational lighthouse along the Diamond Head Trail, known for its scenic qualities and accessibility.
Considerations
- The 1.6-mile round-trip trail includes stairs and steep sections, so be prepared for a slight challenge.
- Aim for an early morning hike to avoid crowds, as this is a popular destination for locals and tourists alike.
- Reservations are required for out-of-state visitors, so plan ahead.
Why it’s a must-do
Diamond Head is one of the most recognizable landmarks on Oahu. Reaching its summit offers a perfect combination of history, exercise, and a stunning reward—a breathtaking view of Honolulu stretching toward the horizon.
Koko Crater Trail Railway
Highlights
- Climb over 1,000 steep railroad-tie stairs on the Koko Crater Trail, a truly challenging workout with views of Hanauma Bay and the Koʻolau mountain range. The trail starts at Koko Head District Park, offering a popular beginning point for this strenuous hike.
- Reward yourself with stunning panoramic views of Oahu’s southeastern coastline.
Considerations
- The ascent is steep and demanding; bring water, wear sturdy shoes, and prepare for a tough workout.
- The trail is completely exposed, so start early or late in the day to avoid the midday heat.
Why it’s a must-do
Known as “Nature’s StairMaster,” Koko Crater provides a mix of grit, history, and jaw-dropping scenery. This hike is perfect for thrill-seekers up for a challenge.
Mānoa Falls Trail
Highlights
- Wander through a magical rainforest trail in the lush Manoa Valley to a 150-foot cascading waterfall.
- Spot tropical plants and wildlife, with the trail offering lush greenery featured in movies like Jurassic Park.
Considerations
- The 1.6-mile round-trip trail is easy but can get muddy—appropriate footwear is essential.
- Swimming in the waterfall is discouraged for safety and health reasons.
Why it’s a must-do
This gentle, family-friendly hike is a feast for the senses, offering a serene escape into Oahu’s natural beauty.
Lanikai Pillbox Hike (Kaʻiwa Ridge) Trail
Highlights
- Hike to World War II pillboxes for unmatched views of Lanikai Beach and the Mokulua Islands on the Kaiwa Ridge Trail, also known as the Lanikai Pillbox Hike.
- Enjoy one of the island’s best sunrise spots.
Considerations
- The initial climb is steep, and the trail can be slippery, especially after rain.
- Parking is limited around the residential trailhead, so plan ahead and be mindful of local residents.
Why it’s a must-do
This quick but rewarding trail delivers postcard-perfect views of Oahu’s windward coast, perfect for Instagram-worthy shots or peaceful meditation at sunrise.
Olomana Three Peaks Trail
Highlights
- A challenging ridge hike with three dramatic peaks offering 360-degree views of Kailua and Waimānalo.
- An option for thrill-seekers looking to conquer rugged terrain.
Considerations
- This trail is only for experienced hikers due to steep ridges and rope-assisted climbs.
- Avoid during or after heavy rain, as sections can become hazardous.
Why it’s a must-do
Olomana offers adrenaline-pumping excitement and unparalleled vistas, satisfying the need for adventure.
Kaʻau Crater Trail
Highlights
- A loop trail featuring a lush jungle, cascading waterfalls, and views into a volcanic crater.
- Combines elements of thrill, beauty, and seclusion.
Considerations
- The trail is about 5 miles long, is strenuous, and requires 4–6 hours to complete.
- Expect muddy and slippery conditions—good hiking shoes are essential.
Why it’s a must-do
Kaʻau Crater offers a unique, immersive experience for those seeking to explore all of Oahu’s diverse terrain in one hike.
Image: Jeremiahboydstun, CC BY-SA 4.0, via Wikimedia Commons
Wiliwilinui Ridge Trail
Highlights
- Traverse a less-crowded ridge with expansive views of Waikīkī, Diamond Head, and the east shores on this moderate hike.
- Enjoy a serene, peaceful hike surrounded by lush vegetation.
Considerations
- Some sections are steep and include staircases.
- Access is through a gated community—obtain a pass and follow parking rules.
Why it’s a must-do
Fewer crowds and jaw-dropping vistas make this hike a hidden gem.
Aiea Loop Trail
Highlights
- A 4.8-mile family-friendly loop trail offering views of Pearl Harbor and the Hālawa Valley.
- Great for birdwatching and spotting native flora.
Considerations
- The trail can be wet and muddy after rain.
- Watch your step—tree roots and uneven terrain can be tripping hazards.
Why it’s a must-do
Perfect for families and beginner hikers, Aiea Loop is a gentle yet rewarding trek through Oahu’s forests.
Image: Leonard S Jacobs
Makapuʻu Point Lighthouse Trail
Highlights
- A 2-mile paved trail on the west side of Oahu offering views of Makapuʻu Lighthouse and Oahu’s stunning southeastern coastline.
- Spot humpback whales during the winter months.
Considerations
- The trail is exposed to the sun, so bring water, sunscreen, and a hat.
- The incline may be challenging for some despite the paved path.
Why it’s a must-do
This accessible trail offers breathtaking coastal views and incredible whale-watching opportunities.
Ehukai Pillbox Hike (Sunset Pillbox Trail)
Highlights
- A short hike with epic views of Oahu’s North Shore and Banzai Pipeline surf break.
- Less crowded than other pillbox trails, offering tranquility.
Considerations
- Trail conditions can be slippery; proper shoes are a must.
- Parking is limited, so plan your visit carefully.
Why it’s a must-do
For a peaceful yet rewarding trail, Ehukai delivers breathtaking views with a hint of historical intrigue.
Preserve the Magic While You Explore
The variety of hiking trails in Oahu are an unforgettable way to explore the island, from volcanic craters to coastal cliffs and serene rainforests. These trails offer not just stunning views but also a connection to Hawaii’s culture, history, and natural beauty.
Before heading out, make sure to wear proper footwear, check weather conditions, and bring sufficient hydration. Always Leave No Trace to preserve the trails’ beauty for future generations.
Now, grab your gear, hit the trails, and discover Oahu like never before!