Oak Park is a Metra commuter railroad station in Oak Park, Illinois, just west of Chicago. It is served by Metra's Union Pacific/West Line, with service east to Ogilvie Transportation Center in Chicago and as far west as Elburn, Illinois. Travel time to Chicago is 16 to 20 minutes. The station is located along North Boulevard between Marion Street and Harlem Avenue, Oak Park's western border with River Forest and Forest Park. The Chicago Transit Authority's Green Line ends at Harlem and is connected directly to this station at Marion Street.