An independent special district in the San Francisco Bay Area that has preserved a regional greenbelt system of over 63,000 acres of public land and manages 26 open space preserves.

What's new?

Mountain Lion Activity at Rancho San Antonio

Prop 3 to fund Watersheds and Open Space on the November 2018 California ballot

Fall outings, fire safety and more in our Fall Newsletter!

Now Hiring for multiple positions

Upcoming Board of Directors election in November.

Ana María Ruiz appointed to lead Midpen as General Manager

Upcoming Activities

September 19, 2018
September 21, 2018
September 23, 2018