District preserves cover the spectrum from redwood forests and chaparral-covered hillsides to sensitive wetlands along the San Francisco Bay. Ranging from 55 to over 18,000 acres, they are open to the public free of charge, 365 days a year. Visitors will find over 220 miles of trails for hiking, mountain biking, nature study, dog walking, and more.
Hiking
Whether you are looking for a quick stroll to enjoy nature, an opportunity to learn more about earthquakes, or an educational hike led by one of our docents, hiking allows you to enjoy your open space.Learn more
Biking
Sixteen open space preserves are open to mountain biking. Here's what you should know...Learn more
Equestrian Activities
District trails provide the long distance opportunities for riding that are valued by equestrians with connections between adjacent preserves or other public lands, such as the Bay Area Ridge Trail.Learn more
Dogs
Midpen offers ten dog-friendly preserves and one off-leash dog area.Learn more
Camping
Spend a night under the stars at the Black Mountain Backpack Camp in Monte Bello Open Space Preserve.Learn more
Geocaching
Geocaching is a high-tech treasure hunting game where the objective is to locate geocaches, or hidden containers, outdoors with the help of a Global Positioning System.Learn more