Midpen on your TV

On Sunday, May 3rd, Midpen was featured on Doug McConnell's new show Open Road airing at 6:30pm on NBCBayArea.  Check it out below to take a short hike along the San Andreas Fault, and travel to the top of Mount Umunhum to see the restoration work in progress.


Air Monitoring Study completed at Rancho San Antonio

The Midpeninsula Regional Open Space District is pleased to announce the completion of an air monitoring study at the Rancho San Antonio Open Space Preserve. The final study report, completed by Winegar Air Sciences, is the culmination of an extensive monitoring effort undertaken between January 2013 and June 2014. The air monitoring study was undertaken to assess air quality at Rancho San Antonio Open Space Preserve, resulting from concerns raised by members of the public and District staff related to the industrial operations at the adjacent Lehigh Southwest Cement Company.

Download the Air Monitoring Studypdf


Bald Mountain Parking Area Now Open!

Located on Mt. Umunhum Road, approximately 1.7 miles past the intersection of Hicks Road in Sierra Azul Open Space Preserve.

The new parking lot includes:

  • 28 parking spaces
  • Vault Toilet Restrooms
  • Connection to Bald Mountain Trail

This project will provide a connection to the future Mount Umunhum Trail, scheduled to open in 2017 and is the first phase of public access to Mt. Umunhum.  The parking lot was funded through a generous grant from the California Coastal Conservancy.

Recent Accomplishments

The Fiscal Year 2013-14 Accomplishments Report presents the results of Midpen's overall endeavor during the past year to manage the regional open space preserves on behalf of the public. Over 130 accomplishments are listed by major category.



Room to Breathe: Video
This video, produced by Doug McConnell, provides an overview of our mission to acquire and preserve a regional greenbelt of open space land in perpetuity, protect and restore the natural environment, and provide opportunities for ecologically sensitive public enjoyment and education.

Room to Breathe: Book

Room to Breathe: The Wild Heart of the San Francisco Peninsula is a community celebration of over 100 color photographs and paintings coupled with prose and poetry. It serves as a keepsake for those who know this land well; and for those who don’t, it will be a splendid introduction.

Room to Breathe makes a great gift for yourself and for fellow outdoor enthusiasts and nature lovers. The coffee table book is available for sale on line, at the District Administrative Office, and at several area bookstores.

For more information, including sample page previews, please visit the Room to Breathe website:

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