10 of the Longest Highway in the US

By Sushil Godara

March 14, 2024

Covering approximately 3,365 miles from Boston, Massachusetts, to Newport, Oregon, it is the longest road in the U.S. and the longest continuous highway in the world.

U.S. Route 20 (US-20)

Provincetown, MA to Bishop, CA (3,205 mi)

U.S. Route 6 (US-6)

Ocean City, MD to Sacramento, CA (3,073 mi)


WA to Boston, MA (3,020 mi)

Interstate 90

lSan Francisco, CA to Teaneck, NJ (2,900 mi)

Interstate 80

Barstow, CA to Wilmington, NC (2,555 mi)

Interstate 40

Santa Monica, CA to Jacksonville, FL (2,460 mi)

Interstate 10