4.9
(38)
2,399
riders
94
rides
Road cycling in Rocky Flats National Wildlife Refuge offers routes through diverse landscapes characterized by rolling plains, prairie grasslands, and woodlands. The area provides striking views of the majestic Rocky Mountains, including close-in perspectives of the Flatirons. The refuge's terrain includes rolling hills, providing varied elevation changes for cyclists. While some trails feature packed gravel, many routes accommodate road cyclists seeking paved sections and scenic vistas.
Last updated: May 25, 2026
14
riders
21.3km
01:00
160m
160m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
5
riders
14.7km
00:41
160m
160m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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23
riders
46.1km
02:21
490m
490m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
9
riders
25.9km
01:22
290m
290m
Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.
5.0
(1)
11
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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Popular around Rocky Flats National Wildlife Refuge
Nice spot to view the lake and for birding. Great Blue Herons nest in the Cottonwoods in the spring and lots of migratory ducks in the spring and fall.
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This location has a portable toilet paid for by a member of the cycling community. For more details https://boulderbeat.news/2023/04/19/biking-porta-potties/
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Frank Varra Park is home to a few running paths and Frank Varra Pond, which is a small reservoir with a children's playing area. The Rock Creek Trail is the main path running through the park and can be connected to neighboring trails to make bigger (or smaller) loops.
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Frank Varra Park is home to a few running paths and Frank Varra Pond, which is a small reservoir with a children's playing area. The Rock Creek Trail is the main path running through the park and can be connected to neighboring trails to make bigger (or smaller) loops.
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This spot is great for a quick break and offers sweeping views of the mountains, with the Great Western Reservoir visible in the distance as well.
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Tucker Lake is a 66 acre lake with gorgeous views of the water and near by foothills. This is a popular lake for fishing as people can easily swap from the Blunn Reservoir to here.
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There are public restrooms here and binocular stands from which you can admire the mesa and views across the Front Range. The trail here is paved sidewalk with a grassy divide between you and the highway.
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From this overlook, which has a bike repair station if needed, you get fantastic, sweeping views of the Flatirons and the town of Boulder.
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The refuge features diverse landscapes with rolling plains, prairie grasslands, and woodlands. While some trails are packed gravel, many routes accommodate road cyclists seeking paved sections. The terrain includes rolling hills, providing varied elevation changes, and offers striking views of the majestic Rocky Mountains, including the Flatirons.
Yes, the refuge offers routes for various ability levels. For an easier ride, consider the Broomfield County High Point loop from Eldorado K-8 School, which is 9.2 miles (14.7 km) long and takes about 40 minutes to complete. There are 29 easy routes available in total.
There are over 80 road cycling routes available in Rocky Flats National Wildlife Refuge, catering to various skill levels from easy to difficult.
Cyclists can enjoy stunning vistas of the Rocky Mountains, including close-in perspectives of the Flatirons, Longs Peak, and Arapahoe Pass. The refuge also encompasses a globally rare xeric tallgrass prairie and diverse ecosystems with rolling plains, prairie grasslands, woodlands, and wetlands.
Yes, the refuge is a sanctuary for over 230 migratory and resident wildlife species. You might spot elk, mule and white-tailed deer, coyotes, prairie falcons, various raptors, songbirds, waterfowl, and black-tailed prairie dogs. Occasionally, black bears, mountain lions, and moose are also seen.
Absolutely. For a more challenging ride with significant elevation gain, the Flagstaff Road Scenic Drive – Davidson Mesa Overlook loop from Flatiron Crossing is a difficult 31.5 miles (50.6 km) path offering expansive views. There are 5 difficult routes in the refuge for advanced cyclists.
The refuge trails are open year-round. However, spring through fall offers the opportunity to see a variety of wildflowers in bloom, adding to the scenic beauty. Always check local weather conditions before heading out, especially during winter months.
Yes, the site holds historical significance as the former Rocky Flats Plant. Interpretive panels along the trails provide information on the refuge's wildlife and history. The historic Lindsay Ranch barn is another point of interest within the refuge.
The area is highly rated by the komoot community, with an average score of 4.9 stars from more than 30 reviews. Reviewers often praise the varied terrain, stunning mountain views, and the opportunity to experience nature and wildlife within a short distance of urban areas.
Yes, many routes in the refuge are designed as loops. For example, the Davidson Mesa Overlook – Frank Varra Park Pathway loop from Visitor is a 28.6 miles (46.1 km) trail that leads through open spaces and offers panoramic mountain views.
While specific parking details for each trailhead are best checked on individual route pages, general information about visiting the refuge, including access points, can often be found on the official U.S. Fish & Wildlife Service website. You can find more details at fws.gov/refuge/rocky-flats/visit-us.
Bicyclists are expected to yield to hikers, and both bicyclists and hikers should yield to horses. This ensures a safe and enjoyable experience for all visitors sharing the trails.


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