Waiahole Forest Reserve is a significant natural area located in Kahaluu on the windward side of Oʻahu, Hawaii. This expansive reserve is characterized by dense tropical forests, ridgelines, and stream-fed valleys, shaped by high levels of rainfall that create a vibrant ecosystem. The terrain includes steep ascents to viewpoints and numerous waterfalls that cascade down lush mountainsides, making it suitable for various outdoor activities. The reserve spans over 3,200 acres and is known for its diverse flora and fauna, including…
22
Routes
4.4
(47)
Average rating
696
People visited

4.7
(33)
339
hikers
7.31km
02:09
220m
220m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

5.0
(1)
9
hikers
7.83km
02:34
350m
350m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

2
hikers
15.7km
06:06
590m
580m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.

4.6
(7)
141
hikers
5.73km
02:20
230m
230m
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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75
runners
7.24km
00:54
250m
240m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

8.31km
01:02
140m
140m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

15.7km
02:37
590m
580m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

17.5km
01:51
210m
210m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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22
riders
66.8km
02:43
290m
290m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

5
riders
41.4km
01:59
370m
370m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

4
riders
37.8km
01:41
330m
330m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

5
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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Waiahole Forest Reserve offers opportunities for hiking, jogging, and road cycling. The reserve features a network of trails through lush rainforests and valleys. Over 1,400 visitors have shared experiences in the area.
Yes, Waiahole Forest Reserve has numerous hiking trails. Popular options include the Aiea Loop Trail and the more challenging Pu'u Ohia Trail, which leads to hidden waterfalls. More information is available in the Hiking in Waiahole Forest Reserve guide.
Access to many trails within the official boundaries of Waiahole Forest Reserve often requires a permit. Permits are issued by the State of Hawaiʻi Division of Forestry and Wildlife (DOFAW). It is advisable to check with DOFAW before planning a visit.
The Aiea Loop Trail is a popular option for jogging within the broader Waiahole area. Another recommended route is the Nakoa Trail in Ahupuaʻa ʻO Kahana State Park, a moderate 5.2-mile (8.4 km) route. For more details, see the Running Trails in Waiahole Forest Reserve guide.
While dedicated road cycling routes directly within the immediate reserve are not prominently featured, the broader area around Waiahole Forest Reserve offers road cycling opportunities. Komoot provides a guide for Road Cycling Routes in Waiahole Forest Reserve.
The reserve is known for its dense tropical forests, ridgelines, and stream-fed valleys. It features numerous waterfalls cascading down lush mountainsides and is home to diverse native plant species and animals like the Hawaiian hoary bat and various native birds.
Trails in Waiahole Forest Reserve range from moderate to challenging. For example, the Aiea Loop Trail is considered moderate, while the Pu'u Ohia Trail delves deeper into the rainforest and is more challenging. Hikers can find routes suitable for various skill levels.
Hike lengths vary within Waiahole Forest Reserve. The Aiea Loop Trail is approximately 4.8 miles (7.7 km) long. Other trails, such as the Pu'u Ohia Trail, can be longer and more strenuous, requiring several hours to complete.
Waiahole Forest Reserve is a popular destination on komoot, with over 1,400 visitors. Routes in the reserve have an average rating of 4.37 out of 5 stars, based on more than 100 ratings.
Yes, komoot offers several guides for the Waiahole Forest Reserve. These include guides for Hiking, Running Trails, Hikes from bus stations, and Road Cycling Routes.
Waiahole Forest Reserve is managed by the Hawaii Department of Land and Natural Resources (DLNR) Division of Forestry and Wildlife (DOFAW). The official website is dlnr.hawaii.gov/dofaw/forestry/, and the Oʻahu Branch can be reached at +1-808-973-9778.
Waiahole Forest Reserve spans over 3,200 acres (approximately 1,295 hectares). This expansive area contributes to its diverse ecosystems and extensive trail network.

