The Strait of Magellan is a navigable sea route located at the southern tip of South America, separating the southern part of Chile from the southern part of Argentina.

The strait connects the Atlantic Ocean with the Pacific Ocean and lies between the Tierra del Fuego archipelago to the south and the mainland of South America to the north. Its total length is about 570 kilometers (350 miles), and its width varies between 3 and 24 kilometers (2 and 15 miles). It is named after the Portuguese explorer Ferdinand Magellan, who navigated it during his circumnavigation of the globe in 1520, the strait was a crucial maritime route before the construction of the Panama Canal. It allowed ships to avoid the dangerous waters around Cape Horn.

The Strait of Magellan is known for its challenging navigation conditions, including strong currents, unpredictable weather, and frequent fog. These factors have made it both a significant maritime route and a challenging one for sailors. Historically, the strait has been vital for trade, particularly before the Panama Canal was opened in 1914. Today, it's less used for global shipping but remains important for regional traffic and local industries.

The strait is surrounded by unique and diverse ecosystems, including cold temperate rainforests and fjords. It’s also home to various wildlife, including sea lions, penguins, and numerous bird species. The region around the Strait of Magellan, especially in areas like Punta Arenas and Puerto Natales in Chile, is popular with tourists exploring Patagonia. The strait and its surroundings offer opportunities for boating, wildlife viewing, and exploring dramatic landscapes.