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The longest mountain range in the United States is the Rocky Mountains. Not only is this mountain range the longest in the United States, but at over 3,000 miles in length it's the longest mountain range in the world.
Mountains are not usually measured in length. Mountain ranges, however, are measured this way. You may be thinking of the Trans-Antarctic mountain range, which measures about 3,500 Km in length, and is one of the longest mountain ranges on earth.
The world's longest mountain system is known as Ocean Ridge, which is a chain of mountains that runs on the seafloor of five oceans around the world, the total length of the system is 49,700 miles. The Andes is the world's longest mountain system on the surface of a continent; it is 4,300 miles in length.
Sizes of mountains vary greatly. You need to say which mountain you want to find the length of.
The mountain range that runs down the western side of South America is the Andes Mountains. They are also the longest mountain range in the world measuring 4,300 miles in length.
The length of the Atlas Mountain is 1500 kilometres (930miles).
Your answer depends on the size of your grid.From its Wikipedia page:"The mountain range stretches between the Ross Sea and the Weddell Sea the entire length of Antarctica, hence the name. With a total length of about 3,500 km, the Trans-antarctic Mountains are one of the longest mountain ranges on Earth."
The Trans-Antarctic mountains are on the continent of Antarctica.From Wikipedia, we learn that the mountain range stretches between the Ross Sea and the Weddell Sea the entire length of Antarctica, thence the name. With a total length of about 3,500 km, the Transantarctic Mountains are one of the longer mountain ranges on earth.
The highest mountain range is the Himalayas, The longest mountain range is the Andes(7000km, or 4300 miles long), If you are including underwater mountain ranges the longest mountain range is called the Ocean ridges, it is a chain of mountains that runs on the sea floor of five ocean across the world, the total length of the system is 80000km or 49700 miles.
The Andes mountain range runs 5,000-miles along the length of South America. The Andes are the longest continental mountain range in the world.
The Carpathian Mountains or Carpathians are mountain ranges with an arc form. The mountain ranges are 1,500 km or 932 mi in length.
The Apennine mountain range is the longest mountain range in the Italian peninsula. It extends over 1,200 km from north to south, running the length of the peninsula.