U.S. Route 20

U.S. Numbered Highway in the United States
(Redirected from U.S. Route 20 in New York)

U.S. Route 20 or U.S. Highway 20 (US 20) is an east–west United States highway that goes from Newport, Oregon to Boston, Massachusetts. The highway is 3,365 miles (5,415 km) long. It is the longest road in the United States.[1]

U.S. Route 20 marker

U.S. Route 20

US 20 highlighted in red
Route information
Length3,365 mi[1] (5,415 km)
ExistedNovember 11, 1926[2]–present
Major junctions
West end US 101 in Newport, OR
Major intersections
East end Route 2 in Boston, MA
CountryUnited States
StatesOregon, Idaho, Montana, Wyoming, Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, New York, Massachusetts
Highway system

There is a gap in the official signage of US 20 through Yellowstone National Park. The park uses unnumbered roads.


  1. 1.0 1.1 Weingroff, Richard (October 17, 2013). "Ask the Rambler: What Is The Longest Road in the United States?". Federal Highway Administration.
  2. Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555 – via Wikimedia Commons.