Historic Route 20 Road Trip Guide

The Master Directory to America's Longest Highway: 3,365 Miles of Coast-to-Coast Americana

Spanning an incredible 3,365 miles across 12 states, U.S. Route 20 holds the crown as the longest continuous highway in the United States. Originally commissioned in 1926, this legendary transcontinental ribbon of asphalt serves as the ultimate scenic, two-lane alternative to the sterile speed of Interstate 90.

Tracing Route 20 delivers a front-row seat to the evolution of the American landscape. It carries travelers seamlessly from the historic streets of old New England, through the agricultural heartland of Central New York and the Midwest, across the sweeping big-sky Great Plains, and directly through the volcanic wonders of Yellowstone before meeting the crashing waves of the Pacific Ocean.

⏱️ Route 20 Fast Facts & Logistics

The Termini: Starts at Kenmore Square in Boston, Massachusetts, and finishes at U.S. Route 101 in Newport, Oregon.
Travel Window: While the eastern half is drivable year-round, high-altitude western mountain passes through Wyoming and the Oregon Cascades can experience severe winter closures. The optimal cross-country window is July through September. Allow at least 2 to 3 weeks for a proper coast-to-coast tour.

🗺️ The Transcontinental Itinerary Loops

We've broken down America's longest highway into six logical regional driving corridors to help plan your ultimate road trip.

Historic Old Sturbridge Village New England

1. The New England Cradle (MA to Border)

Highlights: Boston Freedom Trail, Old Sturbridge Village, & The Berkshires

Begin your trek in Boston’s historic Kenmore Square. From the Atlantic coast, the road winds west through classic Massachusetts mill towns and rolling hills. Stop at Old Sturbridge Village to immerse yourself in an authentic 1830s rural township before climbing into the scenic Berkshires.

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Skaneateles Lake Route 20 Corridor

2. The Empire Gateway (CNY & Finger Lakes)

Highlights: Cazenovia Lake, Chittenango Falls, & Skaneateles Village

Widely considered one of the most beautiful segments on the entire national grid. Route 20 cuts directly across Upstate New York, serving as the main street for historic preservation. Marvel at the 137-foot drop of Chittenango Falls, explore Cazenovia's architecture, and spend an afternoon walking the crystal-clear waterfront pier in Skaneateles.

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Rock and Roll Hall of Fame Cleveland

3. Great Lakes & Midwest Industrial Heart

Highlights: Cleveland Rock Hall, Indiana Dunes, & Galena Historic District

Skirt the southern shoreline of Lake Erie as you drop into Ohio. Roll right past the iconic Rock & Roll Hall of Fame in Cleveland, navigate the stunning sand contours of Indiana Dunes, and cross into Illinois to explore Galena—a beautifully preserved 19th-century river boomtown featuring Ulysses S. Grant’s historic home.

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Carhenge Roadside Attraction Nebraska

4. The Great Plains & Retro Roadside

Highlights: Hawkeye Highway, Nebraska Sandhills, & Carhenge

Cross the mighty Mississippi River into Iowa along the historic Hawkeye Highway stretch. As the landscape flattens into the epic Nebraska Sandhills, true mid-century roadside Americana takes center stage. Be sure to pull over in Alliance, Nebraska, to view Carhenge—a quirky vintage car replica of Stonehenge.

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Yellowstone National Park Bison on Route 20

5. The Rockies & The Volcanic Roof

Highlights: Black Hills Gateways, Cody WY, & Yellowstone National Park

The road climbs dramatically into big-sky country. Pass the eastern approaches of the Black Hills and roll into Cody, Wyoming—the quintessential old-west gateway. From there, Route 20 does something no other highway can claim: it drives directly through the heart of Yellowstone National Park, showcasing roaring geysers and wild bison herds.

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Yaquina Bay Lighthouse Newport Oregon

6. Pacific Northwest High Desert & Ocean

Highlights: Craters of the Moon, Bend OR, & Yaquina Bay Pacific Finish

Descend through Idaho's otherworldly lava fields at Craters of the Moon before crossing into the volcanic Cascade Range of Oregon. Stop in the craft brewery haven of Bend, pass through dense Douglas fir forests, and make the final, triumphant descent into Newport, Oregon, where Route 20 terminates at the historic Yaquina Bay Lighthouse on the Pacific Ocean.

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