The Green River Trail is part of a larger Leafline Trails Network plan. We want to make it easier for people of all ages and abilities to access regional trails in King County. The Leafline Trails Network in King County (part of a larger four-county network) connects people to healthy living through improved recreational opportunities. Having access to no-cost, outdoor recreation improves mental health, reduces stress, and much, much more.

We will provide some background information on the project and then ask for some input on making this area a safe place for you to enjoy. You can use the tabs at the top to navigate through the information.

About the trail

Map of the Green River Trail showing the extent of the project area

A trail from Seattle to Kent along the Green and Duwamish Rivers

The Green River Trail is one of the longest contiguous regional trails in the Puget Sound Region. It has 19 paved miles from the south edge of Seattle to the city of Kent. The trail follows the shore of the Green River and the Duwamish River. It passes through Cecil Moses Park and Fort Dent before meeting up with the Interurban Trail. It again crosses the Interurban Trail in the southern region at Foster Park.

The Green River Trail is a great commuting corridor for many of the workers in the local business parks. The trail crosses several bridges and goes under Interstate 5. It also passes through an older neighborhood surrounded by commercial development. This allows travelers a varied landscape.

Along the banks are Osprey nests, as well as some covered benches for bird watching. Along the trail are a variety of access points for locals to fish.

Why did King County develop the Green River Trail?

The Green River Trail is part of a larger vision. We want to provide more non-motorized options for commuting and recreating in King County. King County's regional trails are also part of a four-county Leafline Trails Network. This network is growing to over 900 miles of interconnected trails in Snohomish, King, Pierce, and Kitsap counties.

A trail for the community

By 2018, King County Parks approved the design of the extension project for the paved trail to South Park. The design and construction of the extension will be off-road and paved with low grades. Our trails provide a safe place for people on bikes, people walking, jogging, using wheelchairs, and other users of all ages and abilities to enjoy.

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planned
Public outreach and preliminary design

Five human figures in a circle that are red, orange, yellow, blue, green, and purple.King County is conducting community outreach and engagement to raise public awareness about the trail design and collect feedback on safety and belonging. 

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complete
Community and landowner outreach - 2019

In the course of this outreach, King County Parks (KCP) in partnership with the ECOSS conducted a total of four tabling events, and six community events and reached 346 homes during door-to-door outreach. Among the various responses to questions about the project, trail neighbors highlighted the following:

  • Feeling safe on the trail
  • Easy access points
  • Separated path from vehicle traffic
  • Well-maintained

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complete
Further coordination and analysis - 2018

After the alternatives analysis, King County needed to further assess design constraints. These included limited space, utility locations, and potential impacts to traffic and emergency access. King County coordinated with the Washington State Department of Transportation (WSDOT), Seattle Public Utilities (SPU), Seattle City Light, and nearby businesses and property owners to gather more information. In 2021, this work concluded, and preliminary design began.

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complete
Corridor Stakeholder Outreach - 2017

In 2017, King County conducted public outreach and engagement efforts to collect community feedback and recommendations regarding the Green River Trail North Extension.

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complete
Conceptual Alternatives Analysis - 2017

In 2017, King County evaluated several alternatives as part of the preliminary design phase for the Green River Trail North Extension. The Green River Trail - Alternative Alignment Analysis provides details of all the options that were considered.