SR 202 begins at an interchange with SR 522 northwest of downtown Woodinville and east of the I-405 interchange. The highway travels south on 131st Avenue NE, crossing under a railroad overpass, before turning west onto NE 175th Street. SR 202 then crosses a railroad grade crossing and bridges the Sammamish River, before turning south onto Redmond–Woodinville Road. The highway travels south along the west side of the Sammamish River valley into Woodinville wine country, a district of wineries and tasting rooms south of Woodinville. SR 202 turns east onto NE 145th Street and crosses over the Sammamish River, and then enters the first in a series of three roundabouts that turn the highway southward.