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Touring cycling in Hilo Watershed Forest Reserve offers routes through a landscape characterized by lush forests, river valleys, and varying elevations. The region features a mix of coastal and inland paths, with some routes providing significant climbs. This area is known for its natural beauty, including waterfalls and diverse plant life, providing a scenic backdrop for touring cyclists.
Last updated: June 25, 2026
3
riders
75.5km
05:27
1,710m
1,710m
Embark on a difficult touring bicycle journey up Mauna Kea, starting from Hilo. This route covers 46.9 miles (75.5 km) and challenges you with a significant 5612 feet (1711 metres)…
1
riders
12.5km
00:54
220m
220m
The Rainbow Falls via Kaumana Caves loop offers a unique touring cycling experience through Hilo's lush Hawaiian landscapes, combining the visual splendor of an 80-foot waterfall with the raw geological…

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1
riders
13.1km
00:55
240m
240m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.45km
00:22
90m
90m
The Nana Stone Via Gilbert Carvalho Park loop offers a delightful and accessible touring cycling experience through Hilo's tropical landscape. This easy route, spanning 3.4 miles (5.4 km) with a…
16.1km
01:19
400m
400m
The Kaiwiki Park via Wainaku loop offers a delightful touring cycling experience through Hilo's verdant landscapes, where you'll glide along paved roads framed by lush tropical foliage. This moderate 10.0-mile…
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Popular around Hilo Watershed Forest Reserve
impressive waterfall in front of a huge cave
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From the entrance, the lava tunnel leads in two directions. The tunnel system is 2,197 meters long in total. Sturdy footwear and sufficient lighting are recommended.
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This marks the start of Mauna Kea! From here you can enjoy the views of the absolutely gargantuan mountain overhead. By this point whether you rode from Hilo or the west coast, you've already done enough climbing to put most cyclists to shame. You can give yourself a pat on the back and enjoy the long descent back into town, or drop a gear and head up the mountain!
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Kaiwiki Park has a covered shelter for a picnic and a huge open field. This field is a great place to play fetch with your dog, launch a drone/RC airplane, or attend one of the local events that locals have at the park.
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Rainbow (Waiānuenue) Falls is a large waterfall, measuring 80 ft (24 m) tall and almost 100 ft (30 m) in diameter. It is free to enter and see the falls because this area is part of the Hawai'i State Parks. There is no fee to see the falls. Rainbow Falls gets its name from the rainbows that show around the falls, created by the mist from the falls and the sunshine at 10:00 a.m.
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Kaumana Cave is a lava tube that is free to enter. It was made by an 1881 lava flow from Mauna Loa volcano. The lava tube has been measured at just over two miles long, which ranks it as the 57th longest lava tube in the world. There is a warning sign at the entrance that indicates: "no lights, no walkways, sharp and loose rocks". Visitors should heed the warning and bring good shoes and a light.
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The Naha Stone was a sacred stone to test a member of a particular bloodline for leadership. Whoever could move the stone possessed the 'mana' or spiritual power to rule.
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There are over 10 touring cycling routes in Hilo Watershed Forest Reserve, offering a variety of experiences from easy urban loops to challenging climbs towards Mauna Kea.
Yes, Hilo Watershed Forest Reserve offers several easy routes perfect for beginners or families. The Nana Stone Via Gilbert Carvalho Park loop is a short, easy trail leading through urban parks and local points of interest, often completed in about 22 minutes. Another option is the Wailoa River State Recreation Area via Mohouil Park loop, which is also considered easy.
The terrain in Hilo Watershed Forest Reserve is diverse, characterized by lush forests, river valleys, and varying elevations. You'll find a mix of coastal and inland paths, with some routes featuring significant climbs, especially those heading towards higher elevations.
Absolutely. For experienced touring cyclists seeking a challenge, the Mauna Kea Base via Hilo route is a difficult 46.9-mile (75.5 km) trail with a substantial elevation gain, leading towards the base of Mauna Kea. This route typically takes over 5 hours to complete.
Many routes offer scenic views and pass by natural landmarks. For instance, the Rainbow Falls via Kaumana Caves loop provides views of waterfalls and local scenery, showcasing the region's natural beauty and diverse plant life.
Yes, several routes are designed as loops, allowing you to start and end at the same point. Examples include the Rainbow Falls via Kaumana Caves loop, the Nana Stone Via Gilbert Carvalho Park loop, and the Kaiwiki Park via Wainaku loop.
The touring cycling routes in Hilo Watershed Forest Reserve are highly rated by the komoot community, with an average score of 4.0 stars. Cyclists often praise the varied terrain, from lush forests to river valleys, and the scenic backdrops that include waterfalls and diverse plant life.
While there isn't specific data on rentals directly within the reserve, Hilo town, being the main urban center nearby, offers several bike rental shops where you can find touring bicycles suitable for exploring the region.
The Hilo Watershed Forest Reserve experiences a tropical climate. Generally, the drier months from May to October are ideal for touring cycling, offering more consistent weather. However, the lush environment means rain can occur year-round, so it's always wise to check the local forecast.
Given the tropical environment and potential for varying weather, it's advisable to bring rain gear, plenty of water, sun protection (sunscreen, hat), insect repellent, and basic bike repair tools. Layers of clothing are also recommended due to elevation changes.
Many of the routes are accessible from or pass near Hilo town, which offers a wide array of cafes, restaurants, and local eateries. You'll find options to refuel before or after your ride, especially around the more urban-adjacent loops.
Generally, no specific permits are required for touring cycling on established public roads and trails within the Hilo Watershed Forest Reserve. However, it's always good practice to check with local authorities or the Hawaii Department of Land and Natural Resources for any updated regulations or specific area restrictions before your ride.


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