Roy'S Redwoods Open Space Preserve, a open space preserve in Marin County's San Geronimo Valley, offers a tranquil natural setting for outdoor activities. The preserve is characterized by its rare old-growth redwood grove, alongside diverse landscapes of Douglas fir, California bay, and madrone forests, interspersed with sunny grasslands. Larsen Creek flows through the preserve, supporting the ancient redwoods and contributing to the area's natural hydrology, making it suitable for several sports like hiking, jogging, road cycling, touring cycling, and more.
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Routes
4.7
(75)
Average rating
2085
People visited

5.0
(1)
15
hikers
5.84km
01:43
180m
170m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

5.0
(1)
10
hikers
14.8km
04:20
400m
390m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

9
hikers
16.7km
04:53
410m
410m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

7
hikers
11.6km
03:40
470m
480m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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5.0
(4)
173
riders
77.1km
03:39
870m
870m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

5.0
(3)
128
riders
108km
04:49
1,110m
1,110m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

5.0
(4)
90
riders
37.7km
02:06
810m
810m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

3.5
(2)
87
riders
41.3km
01:59
560m
560m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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21
riders
23.4km
02:30
720m
720m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

4.3
(3)
16
riders
25.2km
02:37
720m
720m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

5.0
(1)
7
riders
34.9km
03:40
970m
970m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

4.6
(9)
66
riders
26.7km
02:24
620m
620m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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11
runners
11.9km
01:38
400m
400m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4
runners
9.00km
01:04
170m
170m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3
runners
13.7km
01:41
450m
450m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

1
runners
12.2km
01:41
470m
470m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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14.5km
01:28
450m
450m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(3)
64
riders
48.8km
03:02
470m
470m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

56
riders
47.4km
04:55
1,410m
1,410m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(2)
38
riders
122km
07:42
1,250m
1,250m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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4.0
(2)
35
riders
65.9km
04:42
1,010m
1,010m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3.0
(1)
9
riders
38.6km
03:35
950m
940m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

9
riders
52.5km
05:00
1,510m
1,510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3
riders
15.9km
01:33
490m
500m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Roy'S Redwoods Open Space Preserve offers a variety of outdoor activities, including Hiking, Jogging, Road cycling, and Touring cycling. The preserve is known for its old-growth redwood grove and diverse landscapes, providing options for different interests and skill levels.
A popular option is the 3.0-mile (4.8 km) Roy's Redwoods Loop Trail, which traverses both wooded and open areas. The preserve also features the accessible Boardwalk Trail, designed to be firm, stable, and flat. More hiking options can be found in the Hiking in Roy'S Redwoods Open Space Preserve guide.
Yes, the preserve permits bicycling on certain trails, and its location near Nicasio Valley Road makes it suitable for Road cycling and Touring cycling. Cyclists can integrate the preserve into broader routes, such as the nearby Nicasio Reservoir loop. Explore options in the Road Cycling Routes in Roy'S Redwoods Open Space Preserve guide.
Yes, the preserve offers easy trails suitable for beginners, including the Boardwalk Trail, which is firm, stable, and flat. This trail provides an accessible experience within the redwood forest. For more options, consult the Easy hikes in Roy'S Redwoods Open Space Preserve guide.
The preserve is family-friendly, offering features like the Wilderness Way adventure trail for balancing and scrambling, and an Exploration Area where children can build forts. The accessible Boardwalk Trail is also suitable for families. Additional family-oriented routes are available in the Family-friendly hikes in Roy'S Redwoods Open Space Preserve guide.
The preserve is home to a rare old-growth redwood grove, with some trees over 300 years old and nearly 300 feet (91 meters) tall. Other features include Larsen Creek, which supports the redwoods, and diverse landscapes of Douglas fir, California bay, madrone forests, and sunny grasslands. Wildflowers like Pacific hound's tongue and milkmaids bloom seasonally.
Yes, dogs are welcome in Roy'S Redwoods Open Space Preserve but must be kept on a leash at all times. This policy helps protect the preserve's wildlife and ensures a pleasant experience for all visitors. Specific dog-friendly routes can be found in the Dog-friendly hikes in Roy'S Redwoods Open Space Preserve guide.
Roy'S Redwoods Open Space Preserve is a popular destination on komoot, with more than 13,000 visitors having shared their experiences. The preserve's routes have an average rating of 4.8 out of 5 stars from over 700 ratings, indicating a highly regarded outdoor experience.
Komoot offers several guides for the preserve, including Hiking in Roy'S Redwoods Open Space Preserve, Family-friendly hikes, and Road Cycling Routes. Other guides cover easy hikes, dog-friendly trails, running, and traffic-free bike rides.
Roy'S Redwoods Open Space Preserve is managed by Marin County Parks. Information can be found on the Marin County Parks website. For general inquiries, the Marin County Parks department can be reached at +1-415-473-6387.
Yes, the preserve offers trails suitable for jogging and running. The network of trails, including the Roy's Redwoods Loop Trail, provides varying terrain for runners. More details can be found in the Running Trails in Roy'S Redwoods Open Space Preserve guide.
The preserve has made efforts to improve accessibility, including the Boardwalk Trail which is designed to be firm, stable, and flat. Recent improvements in 2024 have formalized trails to enhance accessibility for people of various abilities. This commitment ensures a more inclusive experience for visitors.

