The Midpeninsula Regional Open Space District is a regional greenbelt system in the San Francisco Bay Area comprised of over 60,000 acres of land in 26 open space preserves.

What's new?

General Manager's message - Giving Nature a Helping Hand

Visit the new Midpen Store to purchase logowear and more!

The Summer newsletter is here. Find out what's happening in the preserves.

New to Hiking? Check out our video for tips on getting started.

The Ravenswood Bay Trail project will complete a critical missing gap in the Bay Trail.