Roy's Redwoods Preserve

Two hundred and ninety three forested acres overlooking San Geronimo Valley

Rangers Recommend

Explore the history of Roy's Redwoods with this GIS Storymap: Redwoods, Water, and Wonder.
Boardwalk Trail is a short, easy stroll through some large redwoods on a firm, stable, and flat boardwalk.
Fairy Ring Trail is an out and back, .09 miles each way. Pass by the Fairy Ring and some of the largest redwoods on your way to the Exploration Area.
Two Wilderness Way segments intersect at Forest Trail. Balance, hop, and scramble your way across for a forest adventure.
Hike above the forest floor on Forest Trail, which offers a soft surface and moderate terrain. (Some segments have grades exceeding 10% and cross slopes exceeding 5%.)
Named for the beautiful rocks along the trail, Mossy Rocks is soft-surfaced trail with moderate terrain. Also includes a primitive rock staircase. (Some segments have grades exceeding 10% and cross slopes exceeding 5%.)
The upper Roy's Redwood Loop Trail passes by the meadow and connects to Fairy Ring Trail. You can also continue on to the more rigorous and rugged 2.3-mile Roy's Redwood Loop Trail around the perimeter of the preserve.
The 317-foot lower Roy's Redwood Loop Trail segment connects parking on Nicasio Valley Road with other preserve trails.

Naturalist Notes

Look for pileated woodpeckers and back-throated gray warblers during the day. Listen for barn owls and great-horned owls in evening and early morning.
Pacific hound's tongue, milkmaids, and other wildflowers bloom in spring.
Kingsnakes, racers, ring-necked snakes, and rattlesnakes make their home here, as does every species of lizard in the county.
Check out the iNaturalist field guide [External]. Add your own observations.

Activities

Bike

Dogs Voice Control

Dogs On Leash

Hike

Horseback Riding

Know Before You Go

Dogs must be leashed on trail, and under voice command on fire roads, with leash readily available.
Stay on roads and trails to preserve sensitive ecosystems and to avoid trespassing on private property.
Be courteous and safety conscious when sharing roads and trails. Go slow and say hello [External].
Dress appropriately for the weather. Trails can be muddy during rainy season.
Bring water.
There is one accessible porta-potty.
Steer clear of poison oak.
After an outing, check for ticks.

A wilderness getaway minutes from Woodacre and San Geronimo

Directions

From Hwy 101 in Larkspur, take the exit for Sir Francis Drake Blvd west 8.6 miles, turn right onto Nicasio Valley Rd. Gate is approximately 0.5 miles up on the right.

Parking

Parking is available on Nicasio Valley Road, including one accessible parking space. You can also park in the public lot at San Geronimo Commons off of Sir Francis Drake Boulevard and hike in.

Public Transit

You can also dial 511 to find out about transit options from your location.

Map

Enter your location

38.02100086041155

-122.65496004294631

All visitors must respect rules to keep the preserves safe and sustainable.

Tab 3 Content

ALL VISITORS

Day use only.
No smoking or fires.
Weapons and hunting prohibited.
Motorized vehicles prohibited. (Individuals with qualified disabilities may operate certain kinds of zero-emission mobility devices on some roads,multiuse trails, and certain other facilities.)
Everyone must yield the right-of-way to horses. Bikes must also yield to pedestrians.
No model airplanes, drones, or other self-propelled crafts.
Dispose of waste properly. Pack it out.
Permit required for commercial use and groups of more than 15 people.
All resources are protected. Do not follow, approach, or feed wildlife.

DOGS

Dogs may be off-leash on fire roads only if kept under voice control. Leash must always be readily available.
Dogs are allowed on signed trails and must be leashed. Leash must not exceed 6 feet in length.
Off-fire road and off-trail use prohibited.
Individuals accompanying dogs are required to clean up and remove pet waste.
A maximum of 3 dogs per person is allowed. No commercial dog walking permitted in this preserve.

BIKES

Permitted on signed fire roads and trails designated for multiuse and hikers/bikes.
Off-fire road and off-trail use prohibited.
Speed limit is 15 mph or less. Must slow to 5 mph when passing others or around blind turns.
Electric bicycles are not permitted.

HORSES

Permitted on signed fire roads and trails designated for multiuse and hikers/horses.
Off-fire road and off-trail use prohibited except when watering or resting the horse.

In an emergency, call 911. To report an incident or suspicious activity, call the Ranger Field Office at 415-473-2816 or submit an Incident Report.

Visitors are responsible for knowing and obeying all Marin County Open Space District (MCOSD) regulations. Citations will be issued for violations. Read the official regulations: Marin County Municipal Code Appendix A.

Call 415-473-6387 for more information regarding allowable types and use of mobility devices for people with qualified disabilities.

The MCOSD is a special district pursuant to the California Public Resources Code. Marin County Parks oversees the management of the county parks system and provides public information on behalf of the MCOSD.