At an astounding 15,000 miles, the Pan-American Highway is the world's longest continuous road. It is made of a network of many highways that begin in Alaska's Prudhoe Bay and end at the world's southernmost city --- Ushuaia, in Cape Horn, Argentina.
Australia's Highway 1 travels the circumference of Australia, connecting all the mainland state capitals in a network of highways that spans 9,000 miles.
At almost 6,000 miles, the Trans-Siberian Highway is third on our list of longest freeways. It spans Russia, connecting Moscow to Vladivostok.
The Trans-Canada Highway covers 4,860 miles from Vancouver Island, British Columbia to St. John's, Newfoundland. The highway is a four-lane connector of many of Canada's provinces, but much of it is a two-lane journey through the wilderness.
Chandler Highway in Melbourne, Australia, is widely accepted as the world's shortest highway. It is listed at 1.4 km (0.87 miles). The next shortest "highway" is Yarra Bank Highway (part of City Road) also in Melbourne at 2 km (1.24 miles).