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Marin County Open Space Preserve adventures

Marin County Open Space Preserve Adventures

Marin County Open Space Preserve encompasses a network of protected lands offering diverse outdoor recreation opportunities including hiking, wildlife observation, and scenic vistas in the northern San Francisco Bay Area.

19,000+
Acres Protected
60+
Miles of Trails
Hundreds of thousands (estimate)
Annual Visitors
1971
Year Established

About Marin County Open Space Preserve

 

Marin County Open Space Preserve refers to a collective system of protected lands managed primarily by the Marin County Open Space District in California. These preserves span various locations throughout Marin County, largely focused on conserving local ecosystems, supporting native wildlife, and providing public access to nature and recreation. Geographically, the preserves cover coastal hills, ridges, wetlands, and forested valleys, creating a diverse ecological landscape featuring coastal chaparral, oak woodlands, redwood groves, and grasslands. The preserves protect critical habitat for many local species including bobcats, mountain lions, and several bird species. Historically, some preserve lands hold significance related to Indigenous peoples of the Coast Miwok, early ranching groups, and conservation movements dating back to the 20th century. Visitors enjoy extensive multi-use trails for hiking, mountain biking, and horseback riding, alongside points of interest such as Mount Tamalpais viewpoints, Alpine Lake, and connections to the Bay Area Ridge Trail. Notable features include serene forest settings, panoramic bay views, and seasonal wildflower displays. The preserves are popular with outdoor enthusiasts seeking nearby natural retreats, environmental education opportunities, and dog-friendly trails. Marin County Open Space preserves contribute significantly to regional biodiversity, watershed protection, and open land access amid expanding urban development.

Highlights

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Mount Tamalpais: panoramic views of the Bay Area from the preserve's highest points

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Coastal oak woodlands and redwood groves providing rich habitat for native wildlife

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Historic ranching and indigenous cultural sites scattered throughout the preserve lands

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Alpine Lake: a scenic freshwater reservoir with adjacent picnic and dog-friendly areas

Notable Natural Features

Mount Tamalpais

The highest peak in Marin County offering sweeping views across the San Francisco Bay and Pacific Ocean, accessible via multiple trails within the preserve network.

Alpine Lake

A serene reservoir surrounded by picnic facilities and trails, popular for dog walking and easy hikes.

Coastal Oak Woodlands

Extensive groves of native oaks and associated understory plants providing vital habitat and seasonal beauty.