Top 10 Longest Road In The US 

Are you ready to learn about the longest road in the US? The national road and highways in the US have been patchwork for decades. Which changed with the passage of the Federal-Aid highways act of 1956. Oddly enough, the longest road in the country is not part of the interstate system. Its designation comes from the old US road naming systems. But what is the longest road in the US? And how is long? In this article, we will see the longest road in the US as per their length. 

List Of 10 Longest Road In The Us

In the below list, there is the top 10 longest road in the US let’s check the names.

  1. Route-20 
  2. US-6
  3. US-30
  4. Interstate-90
  5. US-50
  6. Interstate-80
  7. US-2
  8. Interstate-40
  9. Highway 46
  10. Seattle Highway 99

Top 10 Longest Road In The Us 

From the above, longest road in the US list, there is 10 longest highway.

  1. Route-20


Length – 3,365 miles

Do you know where does US route 20 starts and ends?

US Route 20 starts at the junction of Massachusetts Route 2 in Boston and ends at the junction of US 101 in Newport, Oregon. It is the longest continuous road in the US, part of the US Numbered Highway System in America.

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  1. US-6


Length – 3,227 miles

US-6 is also called the Grand Army of the Republic Highway. The title, which pays homepage to the Union Army in the Civil War, stretches from Us Route 6 to Provincetown, Massachusetts, Bishop, California. US-6 is one of the longest stretch of road in the US.

  1. US-30


Length – 3,073 miles

US Route 30, the third-longest highway in the United States, travels from the Pacific Ocean in Austria, Oregon, to the Atlantic Ocean in Atlantic City, New Jersey. It is the longest-running road in the US.

  1. Interstate-90


Length – 3,020 miles

Interstate 90 is the longest interstate highway between the east-west Transcontinental freeway and the 3,020 miles of the United States. It starts in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and Northeast, ending in Boston, Massachusetts. 

  1. US-50


Length – 3,007 miles

The US 50 route from Utah runs through the states. The road does not serve any of the larger population centers in Utah, the largest city on its route being the Delta. Most of the route passes through barren, remote areas. This route runs parallel to Interstate 70 through the eastern half of the state. Bridging Ocean City, Maryland, and Sacramento, California. US Route 50 is famous for a section that has been nicknamed the Loneliest Road in America.

  1. Interstate-80


Length – 2,899 miles

Interstate 80 connects San Francisco, California, and Teaneck, New Jersey. The highest point of this highway is at the Sherman Hill Summit in Wyoming. It is one of the longest roads in North America.

  1. US-2


Length – 2,643 miles 

The western section of US 2 begins at the intersection of Interstate 5 and state route 529 at Everett, Washington, and ends at I-75 at St. Ignatius, Michigan. East of US 2 starts at US 11 Russes Point in New York and ends at I-95 in Halton, Maine.

  1. Interstate-40


Length – 2,559 miles

Do you know what is the third-longest interstate road in the United States?

I-40 is the longest interstate road that travels 2,555 miles, starting in Barstow, California, and ending at Wilmington, North California.

Longest Straight Road In Us –

  1. Highway 46

Highway 46

Length – 75.18 miles

Highway 46 is the longest in the US with no turns. US Route 46 is an east-west US highway that covers the entire state of New Jersey, running 75.22 miles, making it the shortest signed, non-spur US highway. The west end is at the intersection of Interstate 80 and Route 94 in Columbia, Warren Country, on the Delaware River.

  1. Seattle Highway 99

Seattle Highway 99

Length – 48 miles

State Route 99, also called the Pacific Highway, is a state highway in the Seattle metropolitan area that is part of the US state of Washington. It runs 49 miles from the cities of Federal Way, Sittwe, Seattle, Shoreline, and Linwood, from FIFE  in the south to Everest in the north.

Do you know What is the longest road in the world?

The Pan-America Road is the longest road in the world and its length is 19,000 miles (30,000 km).

Visit Longests to know about longest things in the world.


 Why Is Route 66 Famous?

Route 66 reduced the distance between Chicago and Los Angeles by more than 200 miles, which made Route 66 popular among thousands of motorists who drove west in subsequent decades. Like other highways of its day, Route 66 reflects the origin and Evolution Of Road Transportation In The United States.

What Is The Length Of Interstate 90?

3,021 mi

What’s The Busiest Interstate In The United States?

Los Angeles’ section of I-405 serves an estimated 379,000 vehicles per day, making it the busiest interstate in any American city. Texas came in second, with people driving more than 55.7 billion miles on its interstates, followed by Florida at 34.7 billion miles and Ohio at 31.4 billion miles.

What Is The Longest Straightest Road In America?

North Dakota claims its Highway 46 is the longest straight road in the US and Canada. Slight bends aside, the motorway boasts a 31-mile dead straight stretch from Gackle to Beaver Greek. However, the aforementioned Bonneville Salt Flat road is meant to be longer, at 35 miles.

What Is The Shortest US Route?

The nation’s (current) shortest signed interstate. 1.09 miles – I-180, Wyoming. 1.12 miles – I-895, New York.

What Is The Fourth Longest Interstate In The United States?

Interstate 10: 2,460.34 miles

There are 2,460.34 miles (3,959.53 km) along the I-10, making it the fourth-longest Interstate in the United States. Interstate 10 connects the Pacific Ocean at State Route 1 (SR 1), Pacific Coast Highway, in Santa Monica, California, to Interstate 95 in Jacksonville, Florida.

What Is The Thickest Road In The World?

“With 26 lanes in certain parts, the Katy Freeway, or Interstate 10, is the widest highway in the world. It serves more than 219,000 vehicles daily in Texas.

Is Route 66 The Longest Road In America?

A Brief History. US Highway 66, popularly known as “Route 66,” is a significant as the nation’s first all-weather highway linking Chicago to Los Angeles. When contrasted with transcontinental corridors, Route 66 does not stand out as America’s oldest or longest road.

How Long Does It Take To Drive The Longest Road In America?

The route is 3,365 miles long (Route 66 is 2,448 and the PCH is 665) and passes through 12 states. Most people allocate at least a week to traverse Route 20, which takes 52 to 60 hours just to drive.

Why Is Route 66 A Big Deal?

Flanked by historic buildings and diverse cultural resources, Route 66 slices across the continent, revealing the process of historical change that transformed the lives of people, their communities, and the nation.


We looked at the 10 longest roads in the United States. We share their length and where they start and end. We also see the world’s longest road and their length, long tunnel roads, continuous roads, straight roads, etc. it’s all about the longest road in the US

Click here – To 10 Longest Highway In The World

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What is the longest road in the United States

What is the longest road in the United States?

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