<P> The world's longest above - water mountain range is the Andes, about 7,000 km (4,300 mi) long . The range stretches from north to south through seven countries in South America, along the west coast of the continent: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, and Argentina . Aconcagua is the highest peak, at about 6,962 m (22,841 ft). </P> <P> This list does not include submarine mountain ranges . If submarine mountains are included, the longest is the global mid-ocean ridge system which extends for about 65,000 km (40,000 mi). </P>

What is the longest mountain range on earth