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7
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Touring cycling in Hilo Forest Reserve offers routes through lush rainforests and varied terrain on the Big Island of Hawaii. The region is characterized by dense tropical vegetation, numerous waterfalls, and a landscape shaped by volcanic activity, providing diverse cycling experiences. Elevation changes are common, ranging from coastal sections to gradual ascents into the forest interior. These paths allow cyclists to explore the natural environment of the Hilo area.
Last updated: June 25, 2026
1
riders
15.0km
01:09
310m
310m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
75.5km
05:27
1,710m
1,710m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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11.0km
00:50
280m
280m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7.27km
00:31
120m
120m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
1
riders
12.5km
00:54
220m
220m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Hilo 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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The water on the upstream side runs through an old lava tube. I'm told (but haven't seen myself) that when the water isn't too rough, you can carefully hike upstream through the tube to see two waterfalls. There's good parking for several cars just past the bridge in the direction away from Hilo (towards Pepeekeo).
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The Kawainui Stream Bridge has become a little attraction around this rainforest because some people like to jump from the bridge into the water. Warning: Jumping off the bridge can be dangerous, as the river level can change and it can become too shallow. Jumping is not 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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Kawaiku'i Beach Park is a tucked-away park with rocky beaches, grass to play games, and benches for a picnic. The water is a bit shallow and murky, so swimming is not as good as other beaches, but that means less people will be here.
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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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Hilo Forest Reserve offers a selection of 7 touring cycling routes. These routes vary in difficulty, providing options for different skill levels.
Yes, there are 2 easy touring cycling routes in Hilo Forest Reserve. An excellent option for beginners is the Old Onomea Road via Mamalahoa Highway loop, which is 7.2 km long and features gentle elevation changes.
Advanced touring cycling routes in Hilo Forest Reserve, such as the Mauna Kea Base via Hilo, involve significant elevation gain and longer distances. This particular route is 75.5 km long and ascends towards the base of Mauna Kea, requiring good physical condition.
Yes, several routes in Hilo Forest Reserve are circular. For example, the Kawaiku'i Beach Park loop via Umauma Falls offers a moderate 14.9 km loop with coastal views and a waterfall visit. Another option is the Rainbow Falls via Kaumana Caves loop, a moderate 12.4 km ride.
The routes in Hilo Forest Reserve often feature lush rainforests and scenic waterfalls. You can cycle past Umauma Falls on one route, or visit ʻAkaka Falls via Honomū. The region's volcanic landscape also provides unique natural viewpoints.
Hilo Forest Reserve experiences a tropical rainforest climate, meaning it can rain year-round. However, the drier season from May to October generally offers more consistent weather for cycling, though showers can still occur. The cooler, wetter season from November to April brings more frequent rain but also lush, vibrant landscapes.
Given the tropical rainforest environment, lightweight, breathable, and moisture-wicking clothing is recommended. A rain jacket is advisable year-round due to potential sudden showers. Sun protection, including sunscreen and sunglasses, is also important.
Generally, no specific permits are required for cycling on public roads and designated trails within Hilo Forest Reserve. However, always check local regulations for any specific areas or private lands you might encounter.
The komoot community rates the touring cycling routes in Hilo Forest Reserve highly, with an average score of 4.0 stars. Cyclists often praise the immersive experience of riding through lush rainforests, the scenic coastal sections, and the opportunity to see impressive waterfalls.
While some routes involve significant elevation, there are easier options suitable for families or those new to touring cycling. The 2 easy routes, such as the Old Onomea Road via Mamalahoa Highway loop, offer shorter distances and gentler terrain, making them more accessible for a family outing.
Access points and parking vary by route. Many routes start near Hilo town or along main roads like the Mamalahoa Highway. It's best to check the specific route details on komoot for precise starting locations and available parking information.


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