The Interurban Trail South is a partially paved 14-mile (23-kilometer) recreational trail open for non-motorized use. It connects Tukwila to Pacific, and the towns of Kent, Auburn, and Algona along the way. Additionally, the cities of Edgewood and Milton have completed and opened paved segments of the Interurban Trail that are not yet connected to the main segment from Tukwila to Pacific, and the city of Fife has a short segment now under construction. When planned construction is completed to close the gaps in Pacific, Edgewood, and Milton, the trail will extend from Tukwila to Fife.
The trail occupies an abandoned Puget Sound Electric Railway corridor and connects to the Green River Trail
In addition to the main line of the Interurban trail between Tukwila and Fife, the Interurban Trail will connect to the planned northerly extension of the Foothills Trail
through Puyallup and Sumner. When that connection is completed, a continuous trail will extend south through Pacific, across the county line into Sumner and Puyallup where it will connect with the existing Pierce County Foothills Trail
to South Prairie and the planned extension of the Foothills trail to Buckley and Enumclaw.
The Interurban Trail North begins as a signed bicycle route in downtown Seattle, running through the Fremont neighborhood through Phinney Ridge and Greenwood, to 110th and Fremont where it becomes a paved rail trail until 128th and Linden where it will become a cycletrack to the city of Shoreline Border. At the city of Shoreline, the route becomes a wide non-motorized route for 3 miles until the Snohomish County line.