10 Longest Road Trips You Can Take in the USA Reddit Travelers Are Talking About in 2026

For road trip purists, nothing matches the raw romance of setting your front wheels toward a horizon thousands of miles away and driving until the continent literally runs out of pavement. Across the United States, a handful of legendary federal two-lane highways and transcontinental interstate freeways span multiple time zones, climbing from sea-level coastal plains over high Rocky Mountain passes and descending through red rock deserts before reaching opposite oceans.

Drawing on thousands of trip reports, vehicle prep checklists, and route comparisons debated across r/roadtrip, r/travel, and r/overlanding, here is the definitive guide to the 10 longest continuous road trips you can take in the USA for 2026.

A vast two-lane highway cutting across the endless sagebrush horizons of the American West.

1. US Route 20: Boston, Massachusetts to Newport, Oregon (3,365 Miles)

Officially recognized as the longest continuous highway in the United States, US Route 20 spans 3,365 miles (5,415 kilometers) across twelve states. Originating at Kenmore Square in Boston, the highway cuts through upstate New York, skirts the Great Lakes, crosses the Iowa corn belt, cuts directly through the heart of Yellowstone National Park, and terminates overlooking the Pacific surf in Newport, Oregon.

Open mountain highway corridors along US Route 20 winding through the Pacific Northwest.

Reddit road-trippers praise US-20 as the ultimate "Blue Highways" cross-country pilgrimage. Unlike sterile interstate driving, Route 20 immerses motorists in authentic small-town Main Streets, historic roadside diners, and sweeping transitions from eastern hardwood forests to the high desert plateaus of eastern Oregon. Experienced drivers recommend budgeting at least 14 to 20 days to fully savor Yellowstone and the Oregon Cascades.

2. US Route 6 / Grand Army of the Republic Highway (3,199 Miles)

Stretching from the sand spit of Provincetown on Cape Cod, Massachusetts, to the eastern Sierra mountain town of Bishop, California, US Route 6 covers 3,199 miles (5,148 kilometers). Dedicated to Union veterans of the Civil War, Route 6 was historically the longest continuous highway in America before its final California section was truncated in 1964.

Rugged desert basins and distant mountain ridges along US Route 6 in the Great Basin.

On r/roadtrip, travelers celebrate Route 6 for its profound solitude, particularly through the high desert of Utah and Nevada. Passing through the Pennsylvania Allegheny Plateau, the rolling plains of Nebraska, and the rugged canyonlands of east-central Utah, Route 6 concludes beneath the towering 14,000-foot granite peaks of the Sierra Nevada in California.

3. Interstate 90: Boston, Massachusetts to Seattle, Washington (3,020 Miles)

Measuring 3,020 miles (4,860 kilometers), Interstate 90 is the longest interstate highway in the United States. Connecting Massachusetts with Washington State, this northern transcontinental artery skirts Lake Erie and Lake Michigan, traverses the South Dakota Badlands, crosses the Black Hills, and navigates four separate Rocky Mountain passes before climbing over Snoqualmie Pass into Seattle.

Interstate 90 ascending through the evergreen forests and granite peaks of Snoqualmie Pass.

Reddit long-distance commuters highlight I-90 as the premier high-speed cross-country route for road trippers who want world-class roadside attractions without sacrificing fast travel times. Top detours right off the interstate include Badlands National Park, Mount Rushmore, Devils Tower, and the historic gold-rush town of Deadwood, South Dakota.

4. US Route 50: Ocean City, Maryland to Sacramento, California (3,007 Miles)

Dubbed "The Loneliest Road in America" by Life magazine in 1986, US Route 50 spans 3,007 miles (4,840 kilometers) from the Atlantic beach resorts of Maryland across the heartland to California's state capital.

The famous "Loneliest Road in America" signage marking the desolate expanse of US Route 50 in Nevada.

Reddit enthusiasts consider Route 50 the definitive American cross-country drive. While the Appalachian passes of West Virginia and the prairie horizons of Kansas are captivating, the true test begins in Nevada: 400 miles of straight asphalt vaulting over seventeen distinct mountain ranges with valley basins stretching 80 miles between single gas pumps. Ensure your vehicle has a healthy cooling system and carry extra drinking water.

5. Interstate 80: Teaneck, New Jersey to San Francisco, California (2,899 Miles)

Following the historic path of the California Trail, the Mormon Trail, and the First Transcontinental Railroad, Interstate 80 covers 2,899 miles (4,665 kilometers) from the New York metropolitan area across the heart of America to the San Francisco Bay.

The high Sierra Nevada mountain corridor near Truckee and Donner Pass along Interstate 80.

Reddit travelers note that I-80 offers one of the most dramatic geological transitions in North America: driving from the flat expanse of the Nebraska Platte River valley into the high plains of Wyoming (crossing the Continental Divide at Sherman Summit, 8,640 feet), through the Great Salt Lake Desert, and culminating in the steep, winding descent over Donner Pass into the California Central Valley.

6. US Route 2 / The Great Northern: Houlton, Maine to Everett, Washington (2,571 Miles)

Split into two distinct eastern and western segments that bypass through Canada, US Route 2 spans 2,571 miles (4,138 kilometers) across America's northern borderlands. The western 2,115-mile section connects the Upper Peninsula of Michigan with Puget Sound in Washington State.

The snow-dusted front ranges of Glacier National Park flanking US Route 2 in northern Montana.

Reddit road-trippers universally hail the Montana section of Route 2—known as the "Hi-Line"—for its untamed wilderness feel. Skirting the southern boundary of Glacier National Park over Marias Pass (5,216 feet), the highway parallels the historic Great Northern Railway line through endless golden wheat fields and remote Blackfeet tribal lands.

7. Interstate 40: Barstow, California to Wilmington, North Carolina (2,559 Miles)

Stretching 2,559 miles (4,118 kilometers), Interstate 40 is the primary east-west artery of the American Sunbelt, replacing large stretches of legendary Route 66 from California to Oklahoma.

Interstate 40 cutting through the expansive red-earth tablelands of the American Southwest.

Reddit road-trippers praise I-40 for its exceptional musical and cultural diversity: motorists journey through the Mojave Desert, visit the red rocks of Sedona and Flagstaff, cross the Texas Panhandle at Amarillo (home to Cadillac Ranch), explore the blues and country heritage of Memphis and Nashville, and cross the Blue Ridge Mountains into North Carolina.

8. The Great River Road: Lake Itasca, Minnesota to Venice, Louisiana (2,069 Miles)

Tracing the course of the mighty Mississippi River from its humble glacial headwaters at Lake Itasca, Minnesota, down to the Gulf of Mexico, the Great River Road covers 2,069 miles (3,330 kilometers) across ten distinct states.

The pristine headwaters of the Mississippi River emerging from Lake Itasca in northern Minnesota.

On r/travel, Reddit drivers rate this as America's greatest north-south ecological and cultural journey. You begin by stepping across the ankle-deep Mississippi stones in Minnesota, wind past high limestone river bluffs in Wisconsin and Iowa, tour Mark Twain's Hannibal, Missouri, and descend into the cotton fields of the Mississippi Delta before concluding in the bayous and Creole jazz clubs of New Orleans.

9. The Atlantic Coast Route via US Route 1: Fort Kent, Maine to Key West, Florida (2,370 Miles)

Running from the Canadian border forest at Fort Kent, Maine, all the way to the Southernmost Point in Key West, Florida, US Route 1 covers 2,370 miles (3,814 kilometers) along the Eastern Seaboard.

The engineering marvel of the Seven Mile Bridge carrying US-1 across the Florida Keys.

Reddit road-trippers emphasize that driving the complete US-1 is a journey through American history. From Maine's rocky lobster harbors and Boston's Freedom Trail down to the Spanish moss-draped squares of Savannah and St. Augustine, the trip concludes with the breathtaking 113-mile Overseas Highway floating across turquoise Caribbean waters to Key West.

10. The Pacific Coast Epic / US-101 & CA-1: Port Angeles, WA to San Diego, CA (1,650 Miles)

Clinging to the western edge of the continent, the Pacific Coast route combines US Highway 101 through Washington and Oregon with California State Route 1 (Pacific Coast Highway) for an uninterrupted 1,650-mile (2,655-kilometer) oceanfront voyage.

The iconic Bixby Creek Bridge arching high above crashing Pacific waves along California's Big Sur coast.

Reddit drivers declare this the most visually spectacular long-distance coastal drive on Earth. You travel through the temperate rainforests of Olympic National Park, photograph sea stacks along the public beaches of the Oregon Coast, drive beneath giant redwoods in Northern California, and navigate the sheer cliffs of Big Sur down into sunny Southern California.

Comparison of America's Longest Road Trips

Road Trip / Highway Route	Route Endpoints	Total Distance	Recommended Time	Primary Landscape	Top Reddit Advice
US Route 20	Boston, MA to Newport, OR	3,365 mi / 5,415 km	14–20 Days	Heartland, Yellowstone, Cascades	Longest road in the US; camp in Yellowstone
US Route 6	Provincetown, MA to Bishop, CA	3,199 mi / 5,148 km	14–18 Days	Cape Cod dunes, Great Basin, Sierras	Solitude through Utah & Nevada; check fuel gaps
Interstate 90	Boston, MA to Seattle, WA	3,020 mi / 4,860 km	7–10 Days	Great Lakes, Badlands, Rockies	Fastest northern route; detour to Black Hills
US Route 50	Ocean City, MD to Sacramento, CA	3,007 mi / 4,840 km	12–16 Days	Appalachians, Kansas plains, Great Basin	"Loneliest Road" requires full tank in Nevada
Interstate 80	Teaneck, NJ to San Francisco, CA	2,899 mi / 4,665 km	6–8 Days	Midwest cornfields, Wyoming, Donner Pass	Watch for high wind advisories in Wyoming
US Route 2 (Hi-Line)	Houlton, ME to Everett, WA	2,571 mi / 4,138 km	10–14 Days	Northern woods, Glacier NP, Puget Sound	Explore the Hi-Line; cross Marias Pass
Interstate 40	Wilmington, NC to Barstow, CA	2,559 mi / 4,118 km	6–8 Days	Smokies, Music cities, Southwest desert	Stop in Memphis for BBQ and Santa Fe for art
Great River Road	Lake Itasca, MN to Venice, LA	2,069 mi / 3,330 km	10–14 Days	Mississippi River bluffs, Delta, Bayous	Follow the green pilot wheel signs
US Route 1 (Atlantic)	Fort Kent, ME to Key West, FL	2,370 mi / 3,814 km	12–16 Days	Pine woods, historic cities, Florida Keys	Take the Overseas Highway at sunset
Pacific Coast Highway	Port Angeles, WA to San Diego, CA	1,650 mi / 2,655 km	10–14 Days	Sea stacks, Redwoods, Big Sur cliffs	Drive north to south for ocean-side turnouts

Essential Survival Tips for America's Longest Drives in 2026

• Pacing and Fatigue Management: Long-distance endurance driving demands strict discipline. Reddit veterans follow the "3/3 Rule": drive no more than 300 miles (or roughly 4–5 hours) per day, arrive at your destination by 3:00 PM, and stay at least two nights at key waypoints to avoid road burnout.
• Western Fuel Droughts: In remote sectors of US-50, US-6, US-20, and I-80 across Nevada, Utah, Wyoming, and eastern Oregon, fuel stations can be separated by 100 to 140 miles. Never pass an open gas station when your gauge dips below half a tank.
• Tire and Cooling System Health: Long drives through western desert basins in summer subject tires to pavement temperatures exceeding 130°F (54°C). Ensure your tires have ample tread, monitor cold tire pressure daily, and inspect coolant levels and serpentine belts before departure.
• Offline Navigation: Across the Great Plains, northern tier, and Great Basin, cellular coverage drops for hundreds of miles. Pre-download Google Maps or Apple Maps offline areas for your entire route before leaving home.
• National Park Reservation Passes: If your long-distance road trip passes through premier parks (Yellowstone, Glacier, Rocky Mountain, Yosemite), check vehicle entry reservation windows and purchase an America the Beautiful Annual Pass to bypass toll lines.

Frequently Asked Questions

What is the single longest road in the United States?

US Route 20 is the longest road in the USA, measuring 3,365 miles (5,415 km) from Kenmore Square in Boston, Massachusetts, to Oregon Route 101 in Newport, Oregon.

How long does it take to drive the longest road trip in the USA?

Driving the full length of US Route 20 or US Route 6 comfortably takes 14 to 21 days at a steady pace of 200 to 300 miles per day, allowing time for sightseeing, national park detours, and rest stops.

What is the most scenic long-distance road trip in the US?

Reddit travelers consistently vote the 1,650-mile Pacific Coast route (US-101 and Highway 1 from Washington to California) as the most scenic long-distance road trip in America, followed closely by US Route 50 and the Great River Road.

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