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Roy'S Redwoods Open Space Preserve

The best gravel rides in Roy'S Redwoods Open Space Preserve

4.2

(8)

150

riders

18

rides

Gravel biking in Roy'S Redwoods Open Space Preserve offers diverse terrain across old-growth redwood groves, open meadows, and oak woodlands. The preserve features a network of multi-use trails, including fire roads and singletrack, suitable for various cycling levels. Rolling hills characterize much of the landscape, with some routes providing significant elevation changes and panoramic views across Marin County. The area's connectivity to adjacent open spaces extends the potential for varied gravel biking experiences.

Best gravel bike trails in Roy'S Redwoods…

Last updated: October 26, 2026

3

riders

#1.

Loma Alta Summit – 680 Trail loop from Marin

15.9km

01:33

490m

500m

Hard gravel ride. Very good fitness required. Mostly paved surfaces.

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Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces.

Hard
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Moderate gravel ride. Good fitness required. Mostly paved surfaces.

Moderate

4.0

(2)

33

riders

Hard gravel ride. Very good fitness required. Mostly paved surfaces.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces.

Hard
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Popular around Roy'S Redwoods Open Space Preserve

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Tips from the Community

Andrus
May 26, 2025, Alpine Dam

Constructed in 1917 this dam forms Alpine Lake, which sites between Kent and Bon Tempe Lakes. The road across the top of the dam make it a great place to ride on a loop around the lake.

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Andrus
May 25, 2025, Alpine Lake

This lake was formed by the building of Alpine Dam in 1917. It sits between Kent Lake and Bon Tempe Lake, and is popular for a variety of outdoor activities.

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Alex
May 19, 2025, 680 Trail

The 680 Trail in Marin County has access points at the end of Manuel T. Freitas Parkway via the Mission Pass Bike Path and Fawn Drive. The terrain is fun, rolling trails.

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oliviakellis
September 15, 2024, Bon Tempe Lake

West of Lake Lagunitas, Bon Tempe Lake is a reservoir managed by Marin Municipal Water District. It features striking scenery, with lush trees, clear water, and a peaceful atmosphere.

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At this point on Sky Oaks Road, there is a junction with Shaver Grade Road, which connects with a dense network of trails and dirt roads near Bald Hill in the Mount Tamalpais State Park. From here, you can continue on the paved Sky Oaks Road or go arond the gate on to the gravel Shaver Grade Road.

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Steep heading West can have traffic on SFD

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Matthew
February 14, 2024, Loma Alta Summit

Loma Alta literally translates to "high hill" and is the highest point in the Loma Alta Open Space Preserve. A few different dirt roads and trails lead to the bald summit that looks over the surrounding hillsides.

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Embark on an adrenaline-fueled mountain biking adventure through Big Rock. The trail reaches its peak at the towering landmark, a colossal rock that adds a unique touch to the experience. Exercise caution on the descent; the pavement can get slippery, adding an exhilarating challenge to this thrilling ride.

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Frequently Asked Questions

How many gravel bike trails are available in Roy's Redwoods Open Space Preserve?

Roy's Redwoods Open Space Preserve offers a network of over 15 gravel biking routes. These trails cater to various skill levels, ranging from easy to difficult, ensuring options for every rider.

What are the typical difficulty levels for gravel biking in the preserve?

The preserve features a range of difficulties. While there is 1 easy route and 3 moderate routes, the majority of the trails, about 11, are considered difficult. These challenging routes often include significant elevation gains and varied terrain, such as the Loma Alta Summit – 680 Trail loop from Marin County, which climbs over 490 meters.

What natural features can I expect to see while gravel biking in Roy's Redwoods?

You'll experience diverse landscapes, from majestic old-growth redwood groves to sunny grasslands and oak woodlands. Larsen Creek runs through the valley, supporting the redwoods. Keep an eye out for local wildlife like red-tailed hawks, deer, and various songbirds. The preserve also connects to areas like Roy's Redwoods Open Space Preserve and French Ranch Open Space Preserve, offering extended natural beauty.

Are there any viewpoints or panoramic vistas along the gravel routes?

Yes, for those seeking views, the Dickson Ridge Fire Road offers a challenging climb that rewards riders with expansive views across the rolling hills of Marin County and the valley below. You might even catch glimpses toward Mount Tamalpais on clear days.

What are the trail conditions like, and when is the best time to visit?

Trail surfaces vary; while some are firm, many are unpaved, ideal for gravel biking. However, during rainy months, some trails, particularly parts of the Roy's Redwoods Loop Trail, can become very muddy due to horse traffic. Spring is vibrant with wildflowers in the meadows. It's advisable to check local conditions, as some trails may have seasonal closures for bicycles during wet conditions to prevent damage. Generally, drier seasons offer the best riding experience.

Are there any family-friendly gravel biking options in the preserve?

While many routes are challenging, the preserve does offer some easier sections. The Roy's Redwoods Loop Trail is generally considered easy to moderate and is a primary route, making it a good starting point for families. It winds through wooded areas and grasslands, offering a pleasant experience.

Can I connect to other open spaces for longer gravel rides?

Absolutely. Roy's Redwoods Open Space Preserve is well-connected to adjacent areas like French Ranch Open Space and the former San Geronimo Valley Golf Course (now San Geronimo Commons). The Valley Trail, for instance, links Roy's Redwoods to French Ranch Open Space, allowing for longer and more varied rides, such as the Marie Dhority Bridge – Cross Marin Trail loop from Samuel P. Taylor State Park.

Is parking available for gravel bikers at Roy's Redwoods?

Yes, parking is generally available at designated access points for the preserve. It's always a good idea to check specific trailheads or park websites for the most current parking information and any potential fees or restrictions.

What do other gravel bikers enjoy most about Roy's Redwoods Open Space Preserve?

The area is highly rated by the komoot community, with an average score of 4.5 stars from over 4 reviews. Riders often praise the diverse terrain, from the tranquil redwood groves to the challenging fire roads, and the opportunity to explore varied landscapes. Many appreciate the less crowded experience compared to other redwood parks.

Are there any loop trails suitable for gravel biking?

Yes, several loop options are available. The Roy's Redwoods Loop Trail is a popular choice, offering a roughly three-mile circuit through varied scenery. For a more challenging loop, consider the 680 Trail – Gestalt Haus loop from Fairfax, which climbs through hills and offers expansive views.

Are dogs allowed on the gravel biking trails in Roy's Redwoods?

Roy's Redwoods Open Space Preserve is generally dog-friendly, but specific rules regarding leashes and trail access may apply. It's best to consult the Marin County Parks website for the most up-to-date regulations regarding dogs on trails within the preserve.

Are there any cafes or restaurants near the preserve for post-ride refreshments?

While the preserve itself is a natural area, the nearby town of San Geronimo and other surrounding communities offer options for cafes and restaurants where you can refuel after your ride.

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