World's longest coastlines Canada's coastline has a length of 202,080 kilometers and is considered the longest coastline worldwide. Canada is surrounded by three oceans: the Atlantic Ocean on the east, the Pacific Ocean on the west, and the Arctic Ocean to the north.
Which country is the longest coastline in the world?
Coastline: Canada's coastline is the world's longest, measuring 243,042 km (includes the mainland coast and the coasts of offshore islands). This compares with Indonesia (54,716 km), Russia (37,653 km), the United States (19,924 km) and China (14,500 km).
Why does Canada have the longest coastline?
Canada, with a coastline spanning 2,02,080 kilometre, has the world's longest coastline. The Canadian Arctic Archipelago, which consists of 36,563 islands, contributes to the total length of the coastline of Canada.

Below are two helpful articles on a similar topic π
Which country has the longest coastline in the world India?Which country has the longest coastline in the world 2020?