Canada is the country with the longest coastline. The length of Canada's coastline, including all of Canada's islands, is 243.042 km. (151.019 m.).The country with the second longest country is Indonesia with a length of 54.716 km. (33.999 m.) followed by Russia with a length of 37.653 km. (23.396 m.)
In this ranking Greenland with a coastline length of 44.087 km. (second longest coastline) is not included for its status of autonomy within Denmark.