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Touring cycling in PuʻU O ʻUmi Natural Area Reserve offers routes through a remote and ecologically significant landscape on the Big Island of Hawaii. The region is characterized by diverse habitats, ranging from sea level to 5,000 feet, including native forests, rugged lava flows, and montane bogs. Elevation gains are common, providing challenging climbs and expansive views of the volcanic terrain and the Pacific Ocean. The reserve's quiet nature and varied ecosystems provide opportunities for immersion in Hawaii's natural environment.
…Last updated: May 29, 2026
14.8km
01:02
250m
250m
Cycle the moderate 9.2-mile Kohala Mountain Road to Kahua Ranch, gaining 832 feet with panoramic views of Mauna Kea and the Pacific.
6.20km
00:35
300m
300m
The Waipi'o Valley Road Trail is a 3.8-mile touring cycling route on the Big Island, known for extreme steepness and stunning views.

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5
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Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Kahua Ranch offers all sorts of activities at a stunning venue above the clouds (3,200-ft.). You can swing by for horseback riding, Paniolo BBQ Dinner or for those last minute weddings :). https://www.kahua-ranch.com/activities.html
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Old Mamalahoa Hwy is a paved scenic road that navigates through Hawaiian jungle and open fields. Throughout the ride you can catch glimpses of the pacific through the trees. If you continue along Old Mamalahoa Hwy, you'll eventually find yourself passing a cafe where they sell smoothies, bagels, and other snacks.
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There is a large farmers market here open sundays 9am to 2pm. There is a nice mix of local foods, produce, and hard goods! For those ballin' on a budget, this market accepts SNAP and EBT.
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There is a spot on the main road where you can star down the valley and see the Nanue Falls. The top of the cliff is about 1600 feet above sea level, 1,200-feet tall, and is ranked number 282 out of 1,000 for the worlds tallest waterfall.
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Kahua Ranch has been a Hawaii working ranch since 1928. The land changed until the 1980's, when the Kahua and Ponoholo areas split into two properties. Today, they are known as they were then, as Kahua Ranch and Ponoholo Ranch. Here, you can get views of the Pacific Ocean on a clear day. This area can be a great place for filming productions, and there is also a butcher here.
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Only open on Sundays from 9:00 a.m. to 2:00 p.m. The Hamakua Harvest Farmers Market is at the junction of Mamalahoa Highway 19 and Mamane St Highway 240 on a short side detour on Paau Hua Camp Road. This farmers market is a great way to support local businesses. The mission of this farmers market, as quoted from hamakuaharvest.org, is "to promote and advance Hāmākua agriculture by supporting local farmers, enriching the region’s social fabric, and promoting healthy rural lifestyles for the benefit of Hāmākua’s communities, economy, and environment." So come by and grab a bite after a long ride!
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The Old Mamalahow Highway is a four-mile section of roadway sometimes just referred to as the “Scenic Route.” The road connects the towns of Waimea and Honokaa and was once the main connector before Highway 19 was built. Visitors travel the more windy road through rainforests and open green land. Bikers can get views of Onomea Bay and cross several century-old bridges. Keep an eye out for remnants of old sugar mills and enjoy the crossings of the Hakalau Stream system.
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There are three dedicated no traffic touring cycling routes currently available in the Puʻu O ʻUmi Natural Area Reserve. These routes offer a range of experiences, from moderate to difficult, allowing cyclists to explore the unique landscapes of the region.
The terrain in Puʻu O ʻUmi Natural Area Reserve is diverse and can be challenging. Cyclists will encounter a mix of rugged lava flows, native forests, and varying elevations. Some routes may feature paved sections, while others delve into unpaved segments that require good fitness and potentially even pushing your bike at times. The Old Mamalahoa Highway loop, for example, offers significant elevation changes.
The routes within Puʻu O ʻUmi Natural Area Reserve are generally considered moderate to difficult, with significant elevation gains and varied terrain. For families with younger children or those seeking very easy, flat rides, these specific routes might be challenging. The Kohala Mountain Road to Kahua Ranch route is moderate but still involves climbing.
The Big Island of Hawaii generally offers good cycling conditions year-round, but the best time to visit Puʻu O ʻUmi Natural Area Reserve for touring cycling is typically during the drier months, from April to October. This period usually provides more stable weather, though rain can occur at any time. Always check local weather forecasts before heading out, as conditions can change rapidly, especially at higher elevations.
The reserve is rich in natural beauty. You can expect to see rare native forests, expansive lava fields from Mauna Loa eruptions, and unique 'kipukas'—patches of vegetation surrounded by younger lava flows. The Puʻu O ʻUmi Summit, a volcanic cinder cone, offers panoramic views of the surrounding volcanic landscapes and the Pacific Ocean. Keep an eye out for endemic flora and fauna, including native Hawaiian birds.
Yes, the Old Mamalahoa Highway loop from Puu Pulehu Reservoir Dam is a challenging loop route designed for touring cyclists. It covers a distance of approximately 38.5 kilometers and features significant elevation changes, offering a comprehensive experience of the area's landscapes.
Given the remote nature of Puʻu O ʻUmi Natural Area Reserve, designated parking areas might be limited or informal. It's advisable to research specific starting points for routes like the Kohala Mountain Road to Kahua Ranch or the Waipi'o Valley Road Trail to understand the best places to leave your vehicle. Self-sufficiency is key when exploring this area.
While general access to the Natural Area Reserve is often permitted for recreational activities like hiking and cycling, it's always best to verify current regulations. For official information regarding permits or specific access requirements, you should consult the Hawaii Department of Land and Natural Resources website, specifically their section on Natural Area Reserves: dlnr.hawaii.gov.
The most challenging route listed is the Old Mamalahoa Highway – Old Mamalahoa Highway loop from Puu Pulehu Reservoir Dam. This route is rated as difficult, spanning over 38 kilometers with an elevation gain of more than 630 meters, making it suitable for experienced touring cyclists seeking a demanding ride.
Puʻu O ʻUmi Natural Area Reserve is quite remote, and amenities like cafes, pubs, or extensive accommodation options are not directly within the reserve itself. For such services, you would need to venture to nearby towns such as Waimea or other communities in the Kohala Mountains region. Cyclists should plan to be self-sufficient with water, food, and supplies when undertaking rides within the reserve.
Yes, the reserve is a vital refuge for native biodiversity. While cycling, you may have the opportunity to observe endemic flora and fauna. It's particularly known for protecting endangered forest birds such as the Hawaii 'amakihi and 'ioa, as well as rare native plants. Birdwatching is a popular activity, so keep an eye and ear out for these unique species.


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