Sonoma Valley Trail (Proposed)


The first phase is to study the feasibility of developing a 13-mile paved trail that generally follows the Highway 12 corridor from the Springs area northwest of Sonoma to the Santa Rosa city limits. The project is an extension of the Central Sonoma Valley Trail and is in the unincorporated area of Sonoma County’s Supervisorial District 1. The trail would provide recreation and commuting opportunities for residents and visitors in Sonoma, the Springs area, Glen Ellen, Kenwood, and Santa Rosa. It would also provide a link to Sonoma Valley businesses, wineries, schools, and parks and to other existing and proposed trails such as the Central Sonoma Valley Trail, Sonoma Schellville Trail, Bay, San Francisco Bay Area Ridge Trail, and Sonoma City trails.

The study area includes the greater Highway 12 corridor from Melita Road at the Santa Rosa city limits to Agua Caliente Road in the Springs area. With community input, the study will identify feasible trail alignments. The proposed paved trail will be 8 feet wide.

PDF fileFinal Feasibility Study - February 2016 (36 MB)


The Sonoma Valley Trail is identified as a project in the adopted 2010 County Bicycle and Pedestrian Plan. Highway 12 is the only transportation arterial connecting Sonoma to Santa Rosa, the largest city in the county. The corridor is a tourism destination, with wineries, regional and state parks, and historical places of interest. The corridor connects commercial areas to urban and rural residential areas with expanses of open space and agricultural land between communities. However, the corridor lacks a separated pathway for pedestrians and bicyclists traveling north and south. This trail project would develop a separated pathway connecting Sonoma with Santa Rosa, making it much safer.

Project Cost & Funding Sources

In 2013, the County received a $190,575 Community-Based Transportation Planning grant from Caltrans and $21,175 in park mitigation fees to prepare a feasibility study for the project which was completed in February 2016.

Based on the feasibility study, the preliminary cost estimate to complete the 13 mile long trail is $24,000,000. No additional grant funds have been secured for the project.

The trail project will be completed in segments as funding becomes available.

Next Steps

The initial step was to complete a feasibility study. The study was needed to determine the most feasible route, identify alternatives, and to develop a project budget that includes estimated costs for design and engineering, construction, environmental mitigation, and property acquisition.

The study included community outreach, evaluation of existing site conditions and roads, mapping, and a preliminary title search. Public workshops were conducted in September, October, and November 2014 to solicit input. The draft feasibility study was released to the general public for review in January 2016.

After receiving and addressing public comments, the final feasibility study was accepted by the County Board of Supervisors on February 2, 2016. The next step is to apply for grant funds to complete the trail in phases.

Opportunities to Become Involved

Three community workshops were held in September, October and November of 2014. In January 2016 there was an open house to discuss the feasibility study.

No further public meetings are scheduled at this time. To be notified of future meetings and updates, please sign up for automatic project updates and notification by clicking on the “sign up for planning updates” button. 

Contact: Ken Tam, Park Planner. 707-565-3348 or

Questions or Comments?

Contact Project Manager:

Ken Tam
Call:  (707) 565-3348
Email:  Ken Tam

Sonoma Valley Trail

PDF fileFinal Feasibility Study
February 2016, 36 MB

Sonoma Valley Trail map
  PDF fileProject Location Map (2.59 MB)

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