5.0
(2)
450
riders
11
rides
Road cycling in Rabbit Mountain Open Space offers diverse landscapes and panoramic views in Colorado's Front Range foothills. The preserve features low hills covered in grasslands and shrublands, transitioning to areas of ponderosa pine forests. This unique ecological zone provides expansive vistas of both the Rocky Mountains and the Great Plains, making it suitable for varied road cycling experiences.
Last updated: July 12, 2026
4.3
(3)
36
riders
40.2km
02:01
100m
100m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
20
riders
36.7km
01:39
250m
250m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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11
riders
87.8km
04:42
1,660m
1,660m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
7
riders
57.7km
03:12
370m
370m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
3
riders
27.8km
01:16
90m
90m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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Created by the construction of the Olympus Dam, Lake Estes is a 185-acre reservoir on the Big Thompson River. It's idyllic location is further heightened by the chance of spotting some truly majestic wildlife.
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This is the intersection of the Saint Vrain Greenway and Left Hand Creek Trail Trailhead. The Left Hand Creek Trail will take you all the way into Boulder, so it is a great way to go from Union Reservoir into the city.
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Golden Ponds are three beautiful ponds along the Lykins Gulch Greenway. There is a boardwalk that takes you out towards the center of the main pond, so that you can take in the surrounding scenery.
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The trail around the ponds is a paved bike path with a flat packed gravel side. The ponds are beautiful, especially at dawn and sunset, and there is a parking lot with restrooms on the northeast side.
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This smooth, relatively flat trail cuts diagonally across the city as is follows its namesake creek. You'll pass through a number of neighborhoods and parks before the trail connects with the LoBo Trail (Longmont to Boulder), where you can continue on to Boulder if you like.
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The park has ample parking, nice green space, and restrooms. The bike path follows the creek here for a ways and is a great scenic path that connects to a number of other routes around Longmount.
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The park has picnic tables, water access, and open grassy areas. There is a clubhouse you can reserve for events. The restrooms are closed in the winter.
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The Ferncliff Food & Fuel is a small one-stop-shop in the tiny town of Allenspark. There are bathrooms, a pay phone (!), and plenty of snacks and coffee to purchase. This is a great place to stop and refuel along your ride.
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Rabbit Mountain Open Space offers a diverse range of road cycling routes, catering to various fitness levels. You'll find everything from easy, scenic loops through rural landscapes to challenging rides with significant elevation gain and stunning mountain views. The terrain includes well-paved surfaces, with some routes incorporating unpaved segments suitable for gravel bikes or adventurous road cyclists.
There are over 10 dedicated road cycling routes in Rabbit Mountain Open Space, providing a variety of options for exploration. These routes are categorized by difficulty, offering choices for easy, moderate, and difficult rides.
Yes, Rabbit Mountain Open Space has several easy road cycling routes. A popular choice is the Hygiene and Nelson Road loop, which is about 36.7 km long and offers a scenic ride through rural landscapes. Another accessible option is the Longmont Loop, covering 27.8 km with minimal elevation gain.
For experienced road cyclists seeking a challenge, the Lyons to Estes Park via North and South St. Vrain Ave (Highway 36 & 7) loop is a difficult route spanning 87.8 km with significant elevation gain and breathtaking Rocky Mountain views. Another demanding option is the Davidson Mesa Overlook – Rapha Boulder Clubhouse loop from Lyons, which is over 100 km long.
Yes, some routes in Rabbit Mountain Open Space offer a mix of paved and unpaved sections, making them suitable for gravel biking or road cyclists looking for a more adventurous ride. The Hygiene, Niwot Road, and Lyons loop — Gravel is a moderate route that includes such varied terrain.
Road cycling in Rabbit Mountain Open Space offers expansive vistas of both the majestic Rocky Mountains and the vast Great Plains. You'll enjoy scenic views of the Continental Divide, charming rural landscapes, and the Boulder Foothills, especially on routes like the Longmont Loop and the Hygiene and Nelson Road loop.
Yes, Rabbit Mountain Open Space is easily accessible and provides amenities for visitors. You'll find a large parking lot, restrooms, and shaded picnic tables, making it convenient for cyclists to start and end their rides.
The road cycling routes in Rabbit Mountain Open Space are highly rated by the komoot community, with an average score of 5.0 stars. Cyclists often praise the diverse landscapes, panoramic views, and the variety of routes suitable for different fitness levels.
The region's climate generally allows for road cycling through much of the year. However, spring and fall often offer the most pleasant temperatures and beautiful scenery, with seasonal wildflowers in bloom during spring. Summer can be warm, while winter rides depend on snow and ice conditions, particularly on unpaved sections.
Rabbit Mountain Open Space is known for its unique ecological zone, transitioning from grasslands to ponderosa pine forests. You might encounter various wildlife, including falcons, kestrels, hawks, owls, golden eagles, mule deer, elk, and prairie dogs, making it an excellent spot for wildlife viewing during your ride.
For additional details about the Ron Stewart Preserve at Rabbit Mountain, including general park information and regulations, you can visit the official Boulder County Open Space website: bouldercounty.gov.
Yes, many of the road cycling routes in Rabbit Mountain Open Space are designed as loops, allowing you to start and finish at the same point. Examples include the Hygiene and Nelson Road loop and the Longmont Loop, providing convenient circular rides.


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