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United States
Colorado
Boulder County

Rabbit Mountain Open Space

The best MTB trails in Rabbit Mountain Open Space

4.8

(8)

354

riders

8

rides

Mountain biking in Rabbit Mountain Open Space offers routes through a diverse landscape at the eastern edge of the Front Range foothills. The area features a transition zone where grasslands, shrublands, and ponderosa pine forests converge, characterized by low hills and considerable sun exposure. Riders can experience panoramic views of both the Rocky Mountains and the Great Plains from various points along the trails. This preserve provides a well-maintained trail system suitable for mountain biking.

Best mountain bike trails in…

Last updated: May 16, 2026

5.0

(1)

25

riders

#1.

Lower Bitterbrush Trail – Hall Ranch Trailhead loop from Lyons

13.6km

01:09

260m

260m

Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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Hard

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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50

riders

Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.

Moderate

Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate
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Tips from the Community

Jamie S.
November 17, 2023, Vintage Car

Right off the popular Picture Rock Trail is an old, vintage, rusted out green car. This 1930s (!) car is somewhat of a local landmark and a fun place to stop and snap a photo or two before continuing on your hike.

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Zachary
November 17, 2023, Dawson Park

Dawson Park is a popular spot with shaded areas and plenty of grassy spots to picnic. The lake overlooks Longs Peak and the Front Range.

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Jamie S.
November 17, 2023, Hall Ranch Trailhead

The Hall Ranch Trailhead is the main access point for the popular Hall Ranch Open Space. There are over fifty parking spots across two lots, restrooms, picnic tables, a 50 person group shelter, and three horse trailer spots. Hall Ranch itself is a beautiful open space with rolling grasslands, sandstone buttes, and several popular trails for runners, hikers, and mountain bikers.

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Jamie S.
October 23, 2023, McIntosh Lake

McIntosh Lake is a beautiful reservoir in Longmont that offers 3.5 miles of easy walking trails and fantastic views of Longs Peak and Mt. Meeker. It's popular with walkers, runners, and cyclists, as well as paddle-boarders, kayakers, canoers (only non-motorized boats are allowed). Perhaps because ban on motor boats, McIntosh Lake is a great area to see wildlife including, prairie dogs, bald eagles, pelicans, and other water birds. The Oligarchy Ditch Greenway connects to McIntosh Lake, which is a great way for cyclists to access this area.

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Jamie S.
August 18, 2023, Vintage Car

Right off the popular Picture Rock Trail is an old, vintage, rusted out green car. This1930s (!) car is somewhat of a local landmark and a fun place to stop and snap a photo or two before continuing on your hike.

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The Antelope Trailhead is an access point to the popular Hall Ranch Open Space. Hall Ranch has some excellent hiking and mountain biking trails, which include the Bitterbrush Trail, the Nighthawk Trail, the Nelson Loop, and the Button Rock Trail. The Antelope Trail links up to these trail systems.

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The Hall Ranch Trailhead is the main access point for the popular Hall Ranch Open Space. There are over fifty parking spots across two lots, restrooms, picnic tables, a 50 person group shelter, and three horse trailer spots. Hall Ranch itself is a beautiful open space with rolling grasslands, sandstone buttes, and several popular trails for hikers, joggers, and mountain bikers.

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With dogs and bikes allowed on the trails, boats and fishing allowed on the water, and picnic areas with restrooms, McIntosh Lake is a popular public reservoir that is open an hour before sunrise until an hour after sunset each day.

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Frequently Asked Questions

What kind of terrain can I expect when mountain biking in Rabbit Mountain Open Space?

Rabbit Mountain Open Space is situated at the eastern edge of the Front Range foothills, offering a unique transition zone where grasslands, shrublands, and ponderosa pine forests meet. You'll encounter low hills with dry, scrubby vegetation and minimal tree cover, meaning considerable sun exposure. The trails provide panoramic views of both the Rocky Mountains and the expansive Great Plains.

How many mountain bike trails are available in Rabbit Mountain Open Space?

There are around 9 mountain bike trails in Rabbit Mountain Open Space, catering to various skill levels. This includes 2 easy routes, 3 moderate routes, and 4 difficult routes, ensuring options for different riding preferences.

Are there any easy mountain bike trails suitable for beginners or families?

Yes, Rabbit Mountain Open Space offers easy trails. For instance, the Lyons Redstone Museum – Antelope Trailhead loop from Lyons is an easy 3.7-mile (6 km) route. The preserve also features the Indian Mesa Trail, an easy to moderate 2.2-mile trail with less elevation gain, and the gentle 2-mile Eagle Wind Trail loop, both suitable for a more relaxed ride.

What are some of the more challenging mountain bike trails in the area?

For those seeking a challenge, Rabbit Mountain Open Space has several difficult routes. One popular option is the Lower Bitterbrush Trail – Hall Ranch Trailhead loop from Lyons, which spans 8.4 miles (13.6 km) with significant elevation changes. Another difficult route is the Hall Ranch Trailhead – Lower Bitterbrush Trail loop from Lyons, covering 8.3 miles (13.3 km).

What do other mountain bikers say about the trails in Rabbit Mountain Open Space?

The mountain bike trails in Rabbit Mountain Open Space are highly rated by the komoot community, with an average score of 4.3 stars from 12 reviews. Riders often praise the expansive views across the open landscape and the well-maintained trail system that offers a diverse riding experience.

Are there any specific viewpoints or natural features to look out for while riding?

Absolutely. Rabbit Mountain Open Space is known for its stunning panoramic views. From various points along the trails, you can enjoy vistas of both the majestic Rocky Mountains to the west and the expansive Great Plains to the east. The Little Thompson Overlook Trail, though not a komoot route in this guide, is specifically noted for its breathtaking panoramic views at its peak.

Is Rabbit Mountain Open Space suitable for mountain biking year-round?

Yes, the trails in Rabbit Mountain Open Space tend to dry quickly, making them accessible year-round. While they can be heavily trafficked in winter, the conditions generally allow for mountain biking throughout the seasons.

What wildlife might I encounter on the trails?

The preserve is rich in wildlife. You might spot prairie dogs, lizards, snakes (including rattlesnakes), mule deer, and elk. Birdwatchers can look for falcons, kestrels, hawks, owls, golden eagles, and various other species typical of dry, open country.

Are dogs allowed on the mountain bike trails?

The region research indicates that Rabbit Mountain Open Space is generally dog-friendly, but specific trail regulations for dogs while mountain biking can vary. It's always best to check the official Boulder County Open Space website for the most current rules regarding dogs on trails.

Are there amenities like parking or restrooms available at Rabbit Mountain Open Space?

Yes, near the trailhead, you'll find convenient amenities. There are 38 car parking spots, including ADA-accessible spaces, as well as restrooms. Several picnic tables and a 30-person group shelter are also available, making it suitable for day trips.

Are e-bikes permitted on the trails in Rabbit Mountain Open Space?

Generally, e-bikes are not allowed on the trails within Rabbit Mountain Open Space. It's advisable to confirm the most current regulations on the official Boulder County Open Space website before planning your ride.

Where can I find more information about the Ron Stewart Preserve at Rabbit Mountain?

For additional details about the preserve, including visitor information and regulations, you can visit the official Boulder County Open Space website: bouldercounty.gov.

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