hikers on the trail at Russian Ridge
Midpen preserves are an ideal setting for a wide range of activities. Discover landscapes from redwood forests and chaparral-covered hillsides to sensitive wetlands along the San Francisco Bay. Visitors will find over 240 miles of trails for hiking, biking, nature study, dog walking, and more. Come enjoy the great outdoors!

Calendar of Events

A full listing of everything happening at Midpen. Find out about FREE docent-led activities, district special events, board meetings and when we'll be out in the community.Learn more
Monte Bello


Find out more about everything you can do on Midpen preserves: Docent-led activities, hiking, mountain biking, nature study, dog walking, geocaching and accessible open space.Learn more

New Visitors

New to Open Space? Here's what you'll need to know.Learn more
Daniels Nature Center

Kids & Education

Spending time outdoors with your children is a great way to enjoy discoveries of nature. Many of our preserves offer easy to moderate hikes and activities that are well suited to children of varying ages, enthusiasm, and energy levels.Learn more

Get Involved

In addition to heading outdoors and enjoying your preserves, you can also get involved with the District in other ways. There are many opportunities for groups of all ages and interests to get involved by everything from volunteering to participating in board meetings.Learn more
California sister butterfly

Enjoy Nature at Home

You don't need to venture far to experience nature. Check out these engaging activities to explore nature close to home, or even at home!Learn more
Black Mountain Campground


The Black Mountain Backpack Camp at Monte Bello Open Space Preserve is the only campsite on District lands.Learn more