Protected Areas in Marin County

Protected areas in Marin County are designated lands, including national monuments, state parks, and open space preserves, that conserve natural landscapes and ecosystems. This collection includes more than 20 such areas, from the old-growth redwoods of Muir Woods to the coastal wilderness of Point Reyes. These areas provide a network of over 2,400 routes for various outdoor activities.

The primary human-powered activities in Marin County's protected areas are hiking, cycling, and mountain biking. The extensive trail networks support these sports across varied terrain, from coastal bluffs to forested mountains. Trail running is also a common activity on many of the same routes.

This page features over 20 protected areas, including national and state parks, as well as numerous open space preserves. Notable preserves include Baltimore Canyon Open Space Preserve, Ring Mountain Open Space Preserve, and Horse Hill Open Space Preserve. These areas offer a wide range of landscapes, from redwood groves to rolling grasslands with panoramic views.

Muir Woods National Monument features a network of trails primarily for walking and hiking among old-growth coast redwood trees. The main trails are paved or boardwalk and are relatively flat, making them accessible for most visitors. Steeper, unpaved trails connect to the broader trail system of Mount Tamalpais State Park for more challenging hikes.

Mount Tamalpais State Park offers over 60 miles (97 km) of trails for hiking and mountain biking. The park's steep, rugged terrain includes redwood groves and oak woodlands. The famous Dipsea Trail runs through the park, and the Steep Ravine Trail features a ladder for a unique hiking experience.

Point Reyes National Seashore protects over 71,000 acres of coastal wilderness with rugged cliffs, sandy beaches, and rolling grasslands. It is known for its extensive network of over 150 miles (241 km) of hiking trails. Wildlife viewing, including tule elk and seasonal whale watching, is also a significant activity.

Policies regarding dogs vary by park. While dogs are not permitted on trails in Muir Woods National Monument or most of Mount Tamalpais State Park to protect wildlife and habitat, some areas within the Golden Gate National Recreation Area, like the Marin Headlands, have designated trails where dogs are allowed on-leash. It is essential to check the specific regulations for each park or preserve before visiting.

There are more than 2,400 routes available, with a significant number dedicated to hiking. These range from easy, flat walks to strenuous mountain climbs. For example, Baltimore Canyon Open Space Preserve offers over 60 hiking routes through redwood groves, while the Marin Headlands provides coastal hikes with views of the Golden Gate Bridge.

Marin County is a significant location for mountain biking, with numerous trails available in its parks and preserves. The terrain varies from rolling fire roads suitable for beginners to steep, technical singletrack for advanced riders. Areas like Camino Alto Open Space Preserve and China Camp State Park offer popular networks of mountain bike trails.

Yes, several protected areas contain significant historical sites. China Camp State Park preserves a 19th-century Chinese shrimp-fishing village. The Marin Headlands feature numerous historic military installations, including batteries and a Cold War-era Nike missile site. Angel Island State Park, known as the “Ellis Island of the West,” was an active immigration station.

Baltimore Canyon Open Space Preserve contains redwood groves, woodlands, and Larkspur Creek. The preserve offers over 160 routes for activities like hiking, trail running, and mountain biking. The varied terrain provides options for different skill levels, from gentle paths along the creek to steeper climbs into the hills.

Ring Mountain Open Space Preserve is known for its distinctive geology, rare plant species, and panoramic views of the San Francisco Bay. The preserve has over 130 routes for hiking and cycling across its grasslands and rocky outcrops. It also contains petroglyphs created by the Coast Miwok people.