4.6
(351)
4,678
hikers
105
hikes
Hiking in Honolulu Watershed Forest Reserve offers routes through the lush, mountainous terrain located behind the city of Honolulu. The landscape is characterized by steep ridges, deep valleys, and a dense tropical rainforest canopy. Many trails follow streams through groves of eucalyptus and native koa trees, providing a network of paths with varied elevation.
Last updated: May 10, 2026
3
hikers
13.8km
04:50
720m
720m
Hike the moderate 8.6-mile Tripler Ridge Trail in Honolulu, gaining 2360 feet with panoramic views from the summit.
4.9
(24)
200
hikers
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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15
hikers
3.67km
01:01
60m
60m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
3.3
(3)
41
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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This unpaved "road" — really, just a nice walking trail — used to be an access point for the Moanalua Ridge Trail, a route up to the "backside" of the Haiku Stairs. That route is now closed and people who've tried to sneak through have gotten tickets, so it's better not to risk it. The early part of the road is interesting in and of itself, though, thanks to interpretive signs that point out natural history and relics.
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Pa Launa is the main area of the Hoʻomaluhia Botanical Garden and is located right next to the Visitor Center and its parking lot. Take a stroll through beautiful plants and educate yourself about the local flora and fauna at the information plaques.
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Once you reach the peak of Kahoʻomoeʻihikapulani at almost 2,700 feet, you will forget about the struggles along the hike. Enjoy the views to both sides of the island and give yourself a long break before you hike back. You deserve it!
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Please be aware, that the hike along Tripler Ridge Trail is very challenging, partly overgrown and includes many exposed sections. But if you're in good shape and up for an adventure, this is the perfect hike for you, and you will certainly be rewarded!
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Even in foggy weather, it's worth waiting 30 minutes. Sometimes the clouds suddenly break up and then you have the view that you came up here for (among other things)...
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Be aware that trekking the Haiku Stairs (Stairway to Heaven) is prohibited, whether you're starting in the valley (potential fine of $600+ and controls are tight) or walking down from the top.
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It's muddy even in better weather. But down at the parking lot there are ways to clean your completely dirty hiking boots (and everything else).
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Free entry and a fantastic setting. A must see on Oahu. Unfortunately, stopping in the entrance area for a photo is forbidden, there were too many who stopped for Instagram.
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Dogs are generally required to be on a leash in Hawaiʻi's Forest Reserves to protect the native ecosystem and wildlife. However, regulations can vary by specific trail and management area. It's always best to check the latest official guidelines from the Division of Forestry and Wildlife before you go. You can find more information on protected species in the area on the official state ecosystems website.
Yes, the area offers several options suitable for families. A great choice is the Kamananui Valley Trail loop from Tripler Army Medical Center. It's a relatively short and flat walk along the valley floor, making it accessible for hikers of most ages and abilities. The path is often shaded and follows a stream, providing a pleasant rainforest experience.
While many trails follow streams, the most famous waterfall, Mānoa Falls, is on an adjacent trail. You can connect to the Mānoa Falls area from within the reserve via the ʻAihualama Trail. This allows you to combine a forest hike with a visit to the spectacular 150-foot waterfall. Be aware that the trail to the falls can be very muddy and swimming in the pool is not recommended.
It's essential to be prepared for changing weather. Pack plenty of water, snacks, and sun protection. Sturdy hiking shoes with good grip are a must, as trails are often muddy, rocky, and covered in tree roots. A light rain jacket is also highly recommended, as mountain showers are common and can appear suddenly.
There is an extensive network of trails to explore. Komoot features over 90 different routes in and around the Honolulu Forest Reserve, ranging from short, easy walks on the valley floor to strenuous, full-day ridge hikes.
The area is highly regarded by the komoot community. Hikers frequently praise the immersive rainforest experience, with its lush canopy, unique plant life like bamboo groves, and the sounds of native birds. The challenging ridge hikes that offer panoramic views of Honolulu and the coast are also a major highlight for more experienced adventurers.
Yes, there are several excellent loop trails. For a relaxing walk, consider the Lake Waimaluhia – Stream Trail loop loop from Kailua. This easy loop offers a gentle path perfect for a quiet afternoon. For a much more demanding challenge, the Moanalua Ridge Trail – Kamananui Valley Trail loop from Moanalua Valley combines a strenuous ridge climb with a cooler walk back through the valley.
The reserve is a sanctuary for native Hawaiian flora and fauna. Keep an eye out for native forest birds like the bright red ʻapapane and the ʻamakihi. You may also spot the Oʻahu ʻelepaio, an inquisitive bird important in local culture. The trails are lined with native koa and ʻōhiʻa lehua trees, as well as fragrant wild ginger.
Expect true rainforest conditions. Trails are often muddy, slippery, and uneven with exposed tree roots, especially after rain. The weather can change quickly from sunny to misty and drizzly. It's crucial to wear appropriate footwear and be prepared for a rugged hiking experience, even on trails rated as 'easy'.
Absolutely. For some of the best views, experienced hikers should consider the ridge trails. The Tripler Ridge Trail to Kahoʻomoeʻihikapulani — Oʻahu is a moderate but long hike that rewards you with stunning vistas from the ridgeline over the surrounding valleys and out toward the coast.
Parking varies significantly by trailhead. Some popular trails, like those in Moanalua Valley, have dedicated parking lots that can fill up quickly, especially on weekends. For trails starting in residential areas, you will need to find street parking. Always be respectful of local residents by not blocking driveways or mailboxes.


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