10 Longest Highways in the World

Highways are among the most impressive achievements of modern transportation, connecting distant cities, countries, and even continents. Some stretch across enormous areas, passing through deserts, mountains, forests, plains, and busy urban centers.

Here are ten of the world’s longest highways and road systems, measured by the approximate lengths given for their routes.

The Pan-American Highway is one of the most famous and extensive road networks in the world. Stretching across the Americas, it covers approximately 48,000 kilometers when its various branches are included. It connects North, Central, and South America, although the route is interrupted by the Darién Gap between Panama and Colombia.

Australia’s Highway 1 comes next, extending for about 14,500 kilometers. It forms a vast network around the country and is commonly known as the “Big Lap.” It connects most of Australia’s major cities and is recognized as the world’s longest continuous road network.

The Trans-Siberian Highway crosses Russia for approximately 11,000 kilometers, linking the country’s western and eastern regions. Its route passes through some of the most remote and challenging landscapes in the world.

Africa’s Trans-African Highway covers about 10,228 kilometers, forming part of a wider network designed to connect different parts of the continent. It represents an important vision of improved transportation and trade across Africa.

The European Route E40 stretches approximately 8,890 kilometers through Europe and Asia. It is one of the major international routes linking western Europe with Central Asia.

Canada’s Trans-Canada Highway, at about 7,821 kilometers, crosses the country from coast to coast. It connects communities and major cities while passing through forests, prairies, mountains, and coastal landscapes.

India’s Golden Quadrilateral covers approximately 5,846 kilometers and links four major metropolitan areas: Delhi, Mumbai, Chennai, and Kolkata. It is a vital part of India’s road infrastructure and economic network.

In China, China National Highway 318 stretches for around 5,476 kilometers, crossing a remarkable variety of landscapes and reaching the Tibetan region.

The US Route 20 runs approximately 5,415 kilometers across the United States, connecting Boston in the east with Newport, Oregon, in the west. Finally, Interstate 90, at about 4,861 kilometers, is the longest Interstate Highway in the United States, extending from the Pacific Northwest to the Boston area.

Together, these highways demonstrate the enormous scale of global transportation networks. Beyond their impressive lengths, they connect people, support trade, encourage tourism, and make travel across vast distances possible.