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Bikers along the Green to Cedar Rivers trail

Trail Description

The Green to Cedar Rivers Trail is currently in design. Once completed it will be a north-south connection for cyclists, pedestrians and equestrians, weaving through the best of an exceptional landscape connecting south King County communities to rivers, lakes, creeks, and natural areas. This 11-mile trail will improve a section of existing soft-surface trail to a full standard shared-use trail and eventually extend it, connecting the Cedar River Trail to Flaming Geyser State Park on the Green River.

Beginning of trail construction along the north segment is anticipated for summer 2018.

Walkers along the Green to Cedar Rivers Trail

 Want updated construction information?

Visit the Project Information by Segment section to view the latest in design, outreach, technical reports and more. We'll keep all our Green to Cedar Rivers Trail neighbors and stakeholders up to date as design progresses.

 New to the trail?

Visit the Trail History section to learn more about the trail's history, why King County has chosen this project, and the projects scope and timeline.

 Be a part of the trails community!

The Green to Cedar Rivers Trail, much like all of our Regional Trails System trails, is a work in progress requiring constant management and upkeep. We always welcome constructive suggestion about trail maintenance, or safety from our users. Be sure to let us know if you see something on the trail that you think we can improve.

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Green to Cedar River Trail

Questions? Comments?

Trail History

A trail from Seattle to Flaming Geyser State Park – The vision for the trail was originally proposed in the 1992 King County Regional Trails Plan as the “Maple Valley-Flaming Geyser Trail”. The County has been in discussion about the trail vision with the cities of Black Diamond, Maple Valley, and Covington, as they are primary stakeholders within the corridor. In 2012, King County conducted a feasibility study for the trail corridor that identified key opportunities and constraints for future development. Funding for the preliminary design of the entire corridor and construction of the North Segment was proposed as part of the 2014-2019 King County Parks, Trails, and Open Space Replacement Levy.

Why is King County developing the Green to Cedar River Trail? – The Green to Cedar River Trail is part of a larger vision of mobility and access to all residents of King County. Not only does our Regional Trails System provide a connection between locations, it also connects people to healthy living, recreational opportunities, mental health, stress reduction and much, much more.

Project Information by Segment:

Location: 3 miles beginning at the Cedar River Trail to SE Kent Kangley Road

Project update: King County Parks is moving forward with this important trail project that will upgrade the Green to Cedar Rivers Trail to Regional Trail standards, including a 12-foot wide paved trail. This upgrade will make the trail accessible for all ages and abilities while connecting communities, inspiring healthy living and supporting a sustainable future. The north segment of the trail is currently a 10-foot wide gravel trail that is accompanied by a narrower side trail in some sections of the corridor.

Recent Activity

King County's design team has developed two options that meet regional trail standards and reflect the community input we have heard about the importance of a soft surface trail. These options will be presented for public feedback at our upcoming community meeting:

G2C Trail – North Segment Community Meeting #2
Thursday, April 27, 2017
6:30 p.m. – 8:30 p.m.
Shadow Lake Elementary School
22620 Sweeney Rd. SE, Maple Valley (map)


2012 Feasibility Study

Technical Reports: Check back here to review all technical reports for this segment once available.

Public Outreach:

Neighborhood Meeting Summaries:

Location: 8 mile corridor between SE Kent Kangley Road in Maple Valley and Flaming Geyser State Park, just south of the Black Diamond city limits.

Construction update: Connecting the Cedar River and Green River in south King County, the full, 11-mile trail is set to be developed as a paved, shared-use regional trail to accommodate a variety of users. While the project experienced delays over the past year, King County Parks is moving forward with this important trail project and is currently working on preliminary design of the north segment of the trail. Parks anticipates construction of the three-mile north segment to begin in fall 2018. The south segment design procurement and design process is anticipated to begin in the late fall of 2017.

Recent Activity: A Request For Proposals (RFP) is currently advertised for a consultant proposals. Preliminary design and community outreach is anticipated to being on the south segment fall 2017.

Project Manager: Linda Frkuska