17 Epic U.S. Interstates That Seem to Stretch Across the Country Forever
The United States is home to some of the longest interstates in the world, roads that stretch across multiple states, offering travelers an epic journey through diverse landscapes. These massive highways connect major cities, pass through countless small towns, and provide the backbone for the country’s transportation system.
Whether you’re a road trip enthusiast or just curious about America’s sprawling highway network, here are 17 of the most ridiculously long interstates in the U.S., each covering impressive distances that seem to go on forever.
1. Interstate 90 (I-90)
Stretching from Boston, Massachusetts, to Seattle, Washington, Interstate 90 is the longest interstate in the U.S. Covering a staggering 3,020 miles, this highway takes travelers through 13 states, showcasing everything from the Great Lakes to the Rocky Mountains.
It’s an epic coast-to-coast adventure that crosses some of the country’s most iconic landscapes.
2. Interstate 80 (I-80)
Interstate 80 runs 2,899 miles from Teaneck, New Jersey, to San Francisco, California. This major cross-country route follows the path of historic trails like the Lincoln Highway, making it a scenic and historic journey.
It passes through the Midwest’s flatlands, the Rockies, and into the Golden State.
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3. Interstate 40 (I-40)
Spanning 2,555 miles, I-40 stretches from Barstow, California, to Wilmington, North Carolina. This interstate passes through some of the Southwest’s most famous attractions, including the Grand Canyon and Petrified Forest National Park.
It’s an essential route for those traveling coast to coast.
4. Interstate 10 (I-10)
Interstate 10 is the southernmost cross-country highway, running from Santa Monica, California, to Jacksonville, Florida. This massive 2,460-mile route takes drivers through the heart of the South, including cities like Phoenix, Houston, and New Orleans.
I-10 offers a warm-weather road trip across the southern U.S.
5. Interstate 70 (I-70)
I-70 stretches 2,173 miles from Baltimore, Maryland, to Cove Fort, Utah. This highway is passes through the beautiful Rocky Mountains and Colorado’s ski country.
It also passes through historic sites, including parts of the old National Road.
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6. Interstate 95 (I-95)
I-95 runs along the East Coast for 1,919 miles, from Miami, Florida, to Houlton, Maine, at the Canadian border. This major interstate connects major cities like Miami, Philadelphia, Washington D.C., Boston and New York City.
It’s one of the busiest and most important highways in the U.S.
7. Interstate 75 (I-75)
Interstate 75 covers 1,786 miles, from Miami, Florida, to Sault Ste. Marie, Michigan, at the Canadian border. This north-south route takes travelers through diverse regions, from Florida’s Everglades to the industrial heart of the Midwest.
It’s a popular highway for both long-haul truckers and vacationers.
8. Interstate 94 (I-94)
Interstate 94 stretches 1,585 miles from Billings, Montana, to Port Huron, Michigan. This highway traverses the northern part of the country, passing through cities like Minneapolis, Milwaukee, and Chicago.
It’s an essential route for connecting the Great Plains to the Great Lakes region.
9. Interstate 35 (I-35)
Running from Laredo, Texas, to Duluth, Minnesota, I-35 covers 1,568 miles. This major north-south highway cuts through the heart of the U.S., connecting cities like San Antonio, Dallas, and Kansas City.
It’s a vital route for trade between the U.S. and Mexico.
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10. Interstate 15 (I-15)
I-15 covers 1,433 miles from San Diego, California, to Sweetgrass, Montana, at the Canadian border. This interstate passes through dramatic landscapes, including the Mojave Desert and Zion National Park, making it a scenic drive through the western U.S.
It’s also a major route for accessing national parks and recreational areas.
11. Interstate 5 (I-5)
Interstate 5 stretches 1,381 miles along the West Coast, from San Ysidro, California, at the Mexican border, to Blaine, Washington, at the Canadian border. This highway connects major West Coast cities like Los Angeles, Sacramento, Portland, and Seattle.
It’s the backbone of the Pacific Coast’s transportation system.
12. Interstate 25 (I-25)
I-25 runs 1,062 miles from Las Cruces, New Mexico, to Buffalo, Wyoming. This north-south interstate passes through the central Rocky Mountains and major cities like Albuquerque, Denver, and Colorado Springs.
It’s a vital route for travel through the mountain states.
13. Interstate 20 (I-20)
Interstate 20 spans 1,539 miles from Kent, Texas, to Florence, South Carolina. This east-west highway passes through the Southern U.S., connecting cities like Dallas, Atlanta, and Birmingham.
It’s a key route for southern travelers heading east or west.
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14. Interstate 85 (I-85)
I-85 covers 666 miles from Montgomery, Alabama, to Petersburg, Virginia. This major southeastern route passes through important cities like Atlanta, Charlotte, and Richmond.
It’s a shorter but essential highway for travel through the Southern states.
15. Interstate 64 (I-64)
I-64 runs 953 miles from Wentzville, Missouri, to Chesapeake, Virginia. This east-west route cuts through the Midwest and the Appalachian Mountains.
It offers access to major cities like St. Louis and Richmond. It’s a lesser-known but beautiful highway for road trips.
16. Interstate 55 (I-55)
Running 964 miles from LaPlace, Louisiana, to Chicago, Illinois, I-55 is a key north-south route. It passes through the Mississippi River Valley and major cities like Memphis and St. Louis.
This highway offers a glimpse into the heartland of America.
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17. Interstate 44 (I-44)
I-44 covers 633 miles from Wichita Falls, Texas, to St. Louis, Missouri. This interstate is a shorter route compared to others but connects important cities in the Midwest and South.
It’s known for its scenic views of the Ozarks and historic Route 66 landmarks.
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