Ponti Ridge

Converting an unsustainable and steep fire road to a multiuse trail in Pacheco Valle.

UPDATED: July 18, 2020

Trail Work Continues

This project is converting an unsustainable and steep fire road to a multiuse trail. The Marin County Open Space District (MCOSD) began work on Ponti Ridge, a large scale, long term project, in summer 2019. Work has continued through the COVID-19 shelter-in-place during spring and summer 2020, keeping the project on schedule.

Some sections of Ponti Ridge Trail are open during limited times, when work is not actively happening. For your safety and the safety of work crews, please respect closures signs.

Project Description

Used year-round as a recreational trail, with a lower segment accessible by emergency vehicles, the upper segment of Ponti Fire Road is geologically unstable. A section of the fire road experienced a major landslide in 2005. the proposed project was identified as a potential road to multi-use trail conversion project during the Region 3 proposed designation process in August 2016. The purpose of the proposed project is to implement the MCOSD Road and Trail Management Plan to provide the public with a safe multi-use trail system to enhance to visitor experience, reduce the environmental impacts on sensitive resources by reducing sedimentation and erosion, and establish a sustainable system of roads and trails that meet design and management standards and would provide year-round access along the trail alignment.

This project is being developed in conjunction with the Marinwood Fire Department, Novato Fire Protection District, Marin County Fire Department, Marinwood Community Services District, open space neighbors, and the Marin County environmental community.


  • Reduce environmental impact.
  • Reduce risk of landslide potential.
  • Maintain emergency access.
  • Improve trail safety.
  • Improve trail sustainability.
  • Improve the visitor experience.


  • 2016: Project Identified
  • 2016–2018: Project Planning
  • Summer–Fall 2018: Project Description
  • Fall 2018: Stakeholder Review
  • Spring 2019: CEQA Review
  • Spring 2019–Fall 2020: Trail Work