The most beautiful Bay Area trail you’ve never heard of is protected, pristine & open to the public
By: Kate Bradshaw
Tags: Bay Area, San Francisco, California, Hiking, Outdoors

The Fifield-Cahill Ridge Trail will be expanded with a half-mile loop to make it more accessible to all visitors. (Courtesy SFPUC/Robin Scheswohl)

New trails to come

Those expansion plans were about 20 years in the making, and passed a key milestone on May 11, when the San Francisco Public Utilities Commission voted unanimously to approve plans to build a new trail on its Peninsula property, the Southern Skyline Ridge Trail.

The trail will stretch six miles along Skyline Boulevard, from the south side of State Route 92 to the Phleger Estate Property, just across Skyline Boulevard to the Purisima Creek Redwoods Open Space Preserve. And, rather than limit access to guided expeditions as on the Fifield-Cahill Ridge Trail, this trail will be accessible simply by securing a permit in advance.

The commission also approved a new half-mile loop trail connected to the Fifield-Cahill Ridge Trail to make the trail more accessible for everyone, particularly field trip visitors.

As the owner of the Peninsula Watershed property, the SFPUC’s first priority is to protect the water supply, not to provide recreation services, although expanding access is a goal for the agency, Ramirez explained.

“We’re a water agency, not a public park entity,” he said. “We thought this was an area we could make a little more accessible.”

(Image via Yelp)

The vision for the Southern Skyline Boulevard Trail has been around at least since 2001, since a management plan for the property was approved that features the trail, said project manager Mary Tienken to SFPUC commissioners in a hearing over the project’s approval.

As approved, the new trail will run along Skyline Boulevard, also known as State Route 35, and will include a new 20-car parking lot and two new restrooms.

To access this new trail, visitors must get a permit from the SFPUC. To receive a permit, applicants will be asked to complete some form of an educational program to learn about the watershed’s purpose and function, the sensitive resources that surround it, and the visitor rules and restrictions. Permits are expected to be accessible through the SFPUC website or by contacting a community liaison for the SFPUC if the applicant doesn’t have internet access.

The project, expected to cost $21.8 million, has received a $1 million grant from the Metropolitan Transportation Commission in federal funds, according to SFPUC documents.

Key behind the effort to expand public access to the area is the Bay Area Ridge Trail Council, Ramirez said.

“The ridge trail extension is one of our largest projects and will open a stunning six new miles of trails to the public to enjoy, getting us close to our 550 continuous trail vision,” said Liz Westbrook, trail director at the Bay Area Ridge Trail Council.

“There is no question that there is need for broader public (trail) access on the Peninsula and we are so pleased that the new ridge trail extension will be available to the public via permit system,” she told the SFPUC commissioners before they approved the plan.

This map shows the planned updates to the trails on SFPUC property through the Peninsula. Indicated in pink is the new Southern Skyline Ridge Trail route, while the green line shows the new Universal Access Loop Trail along the Fifield-Cahill Ridge Trail. Courtesy San Francisco Public Utilities Commission.

The next step for the project is to put the project out to bid, find a contractor, and begin work on building the trail as soon as 2022. It’s expected to take about a year and a half to complete after construction starts, Tienken said.

However, the project comes with some other next steps that have yet to be fully worked through.

One challenge with the project — and one that the environmental study found would leave a “significant and unavoidable” impact — is on the dangerous conditions that will emerge from pedestrians on the trails having to navigate the busy vehicle intersection at State Routes 92 and 35, according to the project’s environmental report, which was approved by the San Francisco Planning Commission April 29.

To reduce that impact, the SFPUC plans to work with Caltrans to design, fund and build one of two possible options: a grade-separated bridge for pedestrians, cyclists and equestrians over State Route 92 at the east leg of the intersection with State Route 35, or a roundabout to direct vehicles through the State Route 92, State Route 35 and Lifemark Road intersections, which would have highly visible crosswalks to accommodate those traveling by bike, foot or horse.

Such an agreement would also include the addition of some sidewalks to connect the trail segments. That part of the project will have to be completed before people will be allowed unsupervised on the Southern Skyline Ridge Trail, according to environmental documents.

(Image via Yelp)

Another part of the project outside of the SFPUC’s control is how quickly other neighboring properties will build trails to connect with their new one. The Phleger Estate, which is part of the federal Golden Gate National Recreation Area but accessible only through San Mateo County’s Huddart Park, shows future plans to build a trail to connect with the new Southern Skyline Trail on its public trail map, but it is not clear yet when that will be built.

“When they’re ready, our trail will connect with theirs,” Ramirez said.

The expanded Fifield-Cahill Ridge Trail will offer a half-mile trail loop, a new 50-car parking lot and a new restroom along an existing part of the Bay Area Ridge Trail through Skylawn Memorial Park.

As with other segments of the Fifield-Cahill Ridge Trail, visitors in groups of up to 20 people will only have access while under the supervision of a trained volunteer docent to hike, bike or ride horses along the trail.

To sign up to access the Fifield-Cahill Ridge Trail with a docent, visit sfwater.org/trails. Upcoming docent-led events include hikes, bikes and trail runs of various lengths and from various starting points along the trail.