Highlight (Segment) • Mountain Pass
Mauna Kea Access Road
Road cycling
5.0
(3)
The Mauna Kea Access Road is a remarkable mountain pass on the Big Island of Hawaii, serving as the primary route to the summit of Mauna Kea, a dormant volcano and the highest point in the state. This iconic road offers an extraordinary journey from near sea level to an elevation of nearly 14,000 feet, traversing diverse ecological zones and volcanic landscapes. It is renowned globally for its scientific observatories and profound cultural significance, making it a unique destination in the United States.
Visitors are consistently captivated by the dramatic ascent and the unparalleled panoramic views that unfold along the Mauna Kea Access Road. The transition from lush lowlands to barren, high-altitude terrain is a highlight, culminating in breathtaking vistas from the summit, especially during sunrise and sunset. Many find the opportunity for world-class stargazing at the Maunakea Visitor Information Station (VIS) to be an unforgettable experience, drawing people back to this celestial observation point.
Before embarking on this challenging route, preparation is key. The initial section of the road up to the VIS at 9,200 feet is paved and generally accessible. However, the segment above the VIS is unpaved, steep, and requires a four-wheel-drive vehicle due to gradients reaching up to 15%. Hikers and cyclists should be aware of the significant elevation gain and thinning air; stopping at the VIS for at least 30 minutes to acclimatize is strongly advised to prevent altitude sickness. Warm clothing is essential, even on sunny days, as temperatures drop considerably at higher elevations.
The best time to visit Mauna Kea Access Road for optimal views and stargazing is typically during clear weather, which is common year-round, though conditions can change rapidly. Many visitors choose to drive to the summit for sunrise or sunset, followed by stargazing at the VIS. While the road itself is a major draw for drivers and cyclists seeking an advanced challenge, the area also offers opportunities for hiking Mauna Kea trails, particularly around the lower elevations and the Mauna Kea Ice Age Natural Area Reserve.
The journey up Mauna Kea Access Road is an adventure in itself. Cyclists describe the paved section from Hilo as a steady climb, wide and smooth on the hard shoulder, making for a challenging but rewarding ride. Beyond the Visitor Information Station, the road becomes much steeper and gravelly, demanding careful navigation. The sheer scale of driving from near sea level to almost 14,000 feet in a relatively short distance provides a profound sense of achievement and a unique perspective on the island's geology and climate.
For those eager to explore this iconic Hawaiian landmark, komoot offers a variety of routes for cycling, hiking, and driving along the Mauna Kea Access Road. Whether you're planning an advanced cycling ascent, a scenic drive to the Mauna Kea summit, or looking for viewpoints along Mauna Kea Access Road, you can find detailed maps and community-contributed insights to help prepare for your visit. Discover the diverse terrain and plan your adventure to one of the world's most significant astronomical sites.
Tips
March 23, 2022
Road cycling
March 8, 2023
Road cycling
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Nearby routes
Best routes near Mauna Kea Access Road
38
riders
108km
06:27
2,780m
2,780m
The road cycling route from Hilo to the Maunakea Visitor Information Station is often called the "hardest bike climb in the world" for good reason. You'll begin in Hilo's tropical rainforest, then ascend through five distinct climate zones, watching the scenery shift to barren volcanic landscapes. The 67.3 miles (108.4 km) ride involves a staggering 9126 feet (2782 metres) of elevation gain, with sections on Maunakea Access Road hitting 20% gradients, making it a truly difficult and demanding experience that takes around 6 hours and 27 minutes.
Starting from Hilo, you'll need to be prepared for extreme conditions. Altitude sickness is a serious risk due to the significant elevation gain, and the Maunakea Visitor Information Station is a vital stop for acclimatization. Temperatures can drop dramatically as you climb, so bring layers. Given the route's remoteness, lack of services, and the potential for rapid weather changes, a support vehicle is strongly recommended for this epic journey.
Maunakea holds deep cultural significance for Native Hawaiians and is also home to 13 astronomical telescopes, thanks to its exceptional viewing conditions. While this route ends at the Visitor Information Station, be aware that the road beyond it to the summit becomes an unpaved, extremely challenging gravel section, unsuitable for standard road bikes. This ride offers a unique opportunity to experience a dramatic transition from sea level to nearly 10,000 feet, showcasing Hawaii's diverse ecosystems.
7
riders
161km
08:38
3,200m
3,200m
Embark on the ʻAnaehoʻomalu Beach to Maunakea Visitor Information Station century ride, a difficult racebike challenge covering 100.1 miles (161.2 km). This epic route demands an immense 10499 feet (3200 metres) of elevation gain, typically taking around 8 hours and 38 minutes to complete. You will cycle from the coast, past striking lava fields and the Pacific Ocean, through arid scrubland, and up towards the Maunakea Visitor Information Station, where the landscape becomes barren and lunar-like, often above a sea of clouds.
This ride is considered one of the hardest road cycling challenges globally, primarily due to the extreme elevation gain and very steep gradients on the Maunakea Access Road. Be aware that high altitude significantly reduces oxygen availability, so acclimatization is highly recommended before attempting this feat. Weather conditions can change rapidly from warm coastal temperatures to cold, windy conditions at higher elevations, making layered clothing essential for your safety and comfort.
The journey offers incredibly diverse and demanding terrain, with scenery that dramatically shifts as you gain elevation through multiple ecological zones. From the vibrant coastal views, you transition through open ranchlands before reaching the stark, unique environment of Maunakea. This route provides an unparalleled opportunity to experience Hawaii's diverse landscapes and climate zones on two wheels, culminating in panoramic views from the Visitor Information Station.
1
riders
20.7km
01:33
810m
810m
Embark on a challenging road cycling ascent up Mauna Kea Access Road to the Maunakea Visitor Information Station. This moderate route spans 12.9 miles (20.7 km) and demands a significant 2667 feet (813 metres) of elevation gain, typically taking about 1 hour and 32 minutes. As you climb, you'll experience a dramatic shift in scenery, moving from lush, humid environments into drier, more barren, and eventually volcanic landscapes, often rising above the clouds for expansive views.
Prepare for the altitude; less oxygen at higher elevations means altitude sickness can be a concern, especially if you are coming from sea level. Beyond the Maunakea Visitor Information Station, the road turns into an unpaved, extremely challenging gravel section, making it unsuitable for standard road bicycles. Always plan carefully, bring sufficient hydration, sun protection, and layered clothing to adapt to rapid weather changes on the mountain.
This route offers a unique opportunity to cycle through the Mauna Kea Forest Reserve, showcasing Hawaii's diverse ecosystems. From the Visitor Information Station, you can take in panoramic views across the island, including Mauna Loa. The journey highlights the stark beauty of the volcanic terrain and the transition zones that define this iconic Hawaiian peak.
Details
Informations
Distance 602 m
Downhill 10 m
Weather
Powered by Foreca
Today
Sunday 14 June
19°C
7°C
53 %
Additional weather tips
Max wind speed: 11.0 km/h
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Frequently Asked Questions
What are the vehicle requirements for driving the Mauna Kea Access Road?
The initial 6 miles of the Mauna Kea Access Road, leading to the Maunakea Visitor Information Station (VIS) at 9,200 feet, are paved and generally accessible by any vehicle. However, the segment above the VIS to the summit is unpaved, steep, and requires a four-wheel-drive vehicle due to gradients reaching up to 15%.
Are there any specific rules or permits required to access the Mauna Kea summit?
While there isn't a specific permit required for driving the Mauna Kea Access Road itself, there are rules for summit access. Visitors are generally advised to stop at the Maunakea Visitor Information Station (VIS) for at least 30 minutes to acclimatize to the high altitude. Access to the summit observatories may have restrictions, and visitors are encouraged to check the official Maunakea Observatories website for the latest guidelines, especially regarding vehicle types and hours of operation.
Are there any family-friendly hiking trails or activities near the Mauna Kea Access Road?
While the summit area is challenging due to altitude, the lower elevations and areas around the Mauna Kea Ice Age Natural Area Reserve offer more accessible hiking opportunities. The Maunakea Visitor Information Station (VIS) is also a great family-friendly stop for stargazing programs and acclimatization, though direct hiking from the VIS to the summit is very strenuous and not recommended for children or those unaccustomed to high altitudes.
What amenities are available at the Maunakea Visitor Information Station (VIS)?
The Maunakea Visitor Information Station (VIS) serves as a vital stop for visitors. It provides facilities for acclimatization to the high altitude, restrooms, and often has educational exhibits. It's also a popular spot for stargazing programs, especially after sunset, offering a chance to view the night sky through telescopes. Warm clothing and supply options are available here.
Can I bring my dog on the Mauna Kea Access Road or nearby trails?
Generally, pets are not permitted beyond the Maunakea Visitor Information Station (VIS) due to the sensitive high-altitude environment and potential risks to animals at extreme elevations. It's best to leave pets at lower elevations or make alternative arrangements if planning to ascend beyond the VIS.
What are the best viewpoints along the Mauna Kea Access Road before reaching the summit?
Beyond the breathtaking panoramic views from the summit, the drive itself offers numerous scenic spots. The Maunakea Visitor Information Station (VIS) provides excellent vistas and is a prime location for stargazing. As you ascend, the landscape dramatically shifts from lush forests to volcanic lava fields, offering unique photographic opportunities and expansive views of the Big Island and the surrounding ocean.
Are there any public transport options to reach the Mauna Kea Access Road or the summit?
There is no regular public transportation directly serving the Mauna Kea Access Road or the summit. Visitors typically access the road by private vehicle, rental car (ensuring it meets 4WD requirements for the upper section), or by joining guided tours that provide transportation up the mountain.
What kind of wildlife might I encounter on the Mauna Kea Access Road?
As you ascend Mauna Kea, the ecological zones change dramatically. While large mammals are rare, you might spot native Hawaiian birds in the lower and mid-elevations. The high-altitude environment is more barren, but unique insects and specialized plant life adapted to the harsh conditions can be found. Keep an eye out for the endemic Wēkiu bug near the summit, which thrives in the cinder cones.
How does the Mauna Kea Access Road compare to Saddle Road for driving experience?
The Mauna Kea Access Road is a direct ascent to the summit, known for its extreme elevation gain, steep grades, and challenging unpaved sections above the VIS. Saddle Road (Hawaii Route 200), on the other hand, traverses the saddle between Mauna Kea and Mauna Loa, offering a scenic cross-island route. While Saddle Road has improved significantly and is generally well-paved, it's a different driving experience focused on connecting the east and west sides of the island, whereas Mauna Kea Access Road is a dedicated summit climb.
Are there any cafes or accommodation options directly on or very near the Mauna Kea Access Road?
There are no cafes, restaurants, or hotels directly on the Mauna Kea Access Road itself. The Maunakea Visitor Information Station (VIS) offers basic amenities and sometimes has snacks or drinks available, but it is not a full-service cafe. For accommodation and dining, visitors typically stay in nearby towns such as Hilo or Waimea, which are the closest major population centers to the base of Mauna Kea.
What should I pack for a visit to Mauna Kea Access Road, even if I'm not hiking to the summit?
Even if you're only driving to the Maunakea Visitor Information Station (VIS) or the summit, it's crucial to pack warm clothing. Temperatures drop significantly with elevation, and it can be windy and cold, even on sunny days. Layers are essential, including a warm jacket, hat, and gloves. Sunscreen and sunglasses are also important due to the intense UV radiation at high altitudes. Don't forget plenty of water to stay hydrated and help with acclimatization.