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Routes
Gravel rides
United States
Colorado
Boulder County

Eldorado Canyon State Park

The best gravel rides in Eldorado Canyon State Park

4.4

(12)

450

riders

18

rides

Gravel biking in Eldorado Canyon State Park offers diverse terrain set against a backdrop of towering sandstone cliffs and the winding South Boulder Creek. The park is situated in an ecological transition zone where plains meet the Front Range foothills, providing varied landscapes. Roads within the park transition from paved to dirt and gravel, making wider tires generally advisable for the varied surfaces and significant elevation gains. The region is characterized by dramatic red and golden sandstone cliffs, some reaching…

Last updated: May 1, 2026

5.0

(1)

3

riders

#1.

Gross Reservoir – Walker Ranch Loop Trailhead loop from First Baptist Church

28.7km

02:43

820m

820m

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Popular around Eldorado Canyon State Park

Hiking in Eldorado Canyon State Park

Road Cycling Routes in Eldorado Canyon State Park

Running Trails in Eldorado Canyon State Park

MTB Trails in Eldorado Canyon State Park

Cycling in Eldorado Canyon State Park

Tips from the Community

AverieOutside
June 29, 2025, Adler-Fingru Open Space

Adler-Fingru Open Space is a 55.7-acre area that was once used for crop production and livestock grazing. Ownership of the space is divided three ways among the cities of Boulder, Louisville, and Lafayette. This property is under an agricultural lease, so access to the public is limited to only the Coal Creek Trail that passes through the space.

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Stay on the highest point of the path - you’ll find less gravel

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Construction. 🚧 Great from Boulder

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Steep. Bring your gears. Wonderful views. Ride it early during the week

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Alex
August 24, 2024, US 36 Bikeway

The US 36 Bikeway, spanning 16 miles across Adams, Boulder, Broomfield, and Jefferson counties, provides a safe and convenient non-motorized route between Denver and Boulder. The trail, separated from traffic by barriers and grassy medians, connects to other regional trails, with scenic views and multiple access points to open spaces and parks.

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Alex
August 21, 2024, Community Ditch Trail

The Community Ditch Trail is an easy mountain biking route that serves as a connector to the Marshall Mesa trails. While not particularly thrilling to ride, it offers beautiful views of the Flatirons and golden open fields. The trail effectively connects the east and west sections of trails across Highway 93, making it useful, scenic, and straightforward.

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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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Frequently Asked Questions

How many gravel bike trails are available in Eldorado Canyon State Park?

Eldorado Canyon State Park offers a diverse network of over 20 gravel bike routes. These trails cater to various skill levels, ranging from moderate to challenging rides, ensuring there's an adventure for almost every gravel biker.

What is the typical terrain like for gravel biking in Eldorado Canyon State Park?

The terrain in Eldorado Canyon State Park is quite varied, transitioning from paved surfaces to dirt and gravel roads. You can expect a mix of hard-packed trails and significant elevation gains, making wider tires generally advisable for a comfortable and capable ride. The canyon's towering sandstone cliffs provide a stunning backdrop throughout your journey.

Are there any family-friendly gravel biking options in Eldorado Canyon State Park?

While many routes in Eldorado Canyon State Park feature significant elevation changes and challenging sections, there are some moderate options available. For families, it's best to look for routes described as 'moderate' in difficulty, keeping in mind that some sections might still require dismounting and pushing bikes. Always check the route details for specific elevation and surface information before heading out.

What kind of wildlife might I encounter while gravel biking in the park?

Eldorado Canyon State Park is situated in a unique ecological transition zone, supporting a rich diversity of wildlife. While gravel biking, you might spot mule deer, elk, golden eagles, and wild turkeys. During summer evenings, large colonies of bats can be observed in the Inner Canyon's caves. Always maintain a respectful distance from wildlife.

Are there any specific trails or areas designated for bikes in Eldorado Canyon State Park?

Yes, the Rattlesnake Gulch trail is specifically designated for bikes, providing a dedicated route for cyclists within the park. While biking is permitted throughout the park, this trail offers a focused experience for riders.

What are some notable landmarks or points of interest along the gravel bike routes?

Beyond the stunning natural beauty of the towering sandstone cliffs and South Boulder Creek, you can explore historical and natural points of interest. Consider visiting the Ruins of the Crags Hotel for a glimpse into the past, or experience the dedicated Rattlesnake Gulch Trail. The Gross Dam Road (Gravel) also offers a unique riding experience.

What do other gravel bikers enjoy the most about gravel biking in Eldorado Canyon State Park?

The gravel biking experience in Eldorado Canyon State Park is highly rated by the komoot community, with an average score of 4.5 stars from over 20 reviews. Riders frequently praise the park's dramatic scenery, including the towering sandstone cliffs and the serene South Boulder Creek, as well as the diverse terrain that offers both challenging climbs and rewarding descents.

Are there any long-distance gravel routes that offer extensive riding?

For those seeking a longer adventure, the Boulder Creek Trail – Boulder Creek Path loop from Culinary School of the Rockies is a popular choice. This difficult 50.2-mile (80.8 km) route offers extensive riding along the Boulder Creek, combining scenic views with a significant distance challenge.

Can I find any circular gravel bike routes in the area?

Yes, many of the gravel routes in and around Eldorado Canyon State Park are designed as loops. For example, the Gross Reservoir – Walker Ranch Loop Trailhead loop from First Baptist Church is a popular 17.8-mile (28.7 km) circular route known for its significant elevation changes and varied surfaces.

What is the best time of year to go gravel biking in Eldorado Canyon State Park?

Eldorado Canyon State Park offers gravel biking opportunities throughout much of the year. However, the park can experience high visitor traffic on summer weekends. Spring and fall often provide pleasant temperatures and fewer crowds, making them ideal times to explore. Always check local weather conditions, especially for snow or ice in winter, and be aware that some sections may be more challenging after rain.

Are there any cafes or places to refuel near the gravel trails?

While the park itself focuses on natural recreation, its convenient proximity to Boulder means you can find cafes and other amenities nearby. The historic Eldorado Springs Pool, fed by mineral-rich artesian spring water, also provides a refreshing oasis nearby for post-ride relaxation.

Is public transport an option for reaching Eldorado Canyon State Park with a bike?

Eldorado Canyon State Park is conveniently located near Boulder, and often accessible via scenic bike paths. While specific public transport options for bikes directly into the park may vary, its close proximity to Boulder makes it a feasible destination for cyclists looking to combine a ride with public transit to the general area.

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