. . . . "US" . . . "West" . . . . "U.S. Route 20 (US 20) is an east\u2013west United States highway. The \"0\" in its route number indicates that US 20 is a coast-to-coast route. Spanning 3,365 miles (5,415 km), it is the longest road in the United States, and the route roughly parallels that of Interstate 90 (I-90). There is a discontinuity in the official designation of US 20 through Yellowstone National Park, with unnumbered roads used to traverse the park.It and US 30 break the general U.S."@en . . "20" . . "East" . . . "1926-11-11Z"^^ . . "5.41544e+06"^^ . . . .