| PDF Title | Which Country Has the Longest Coastline in the World? |
| Category | |
| Posted By | Admin |
| Posted On | Nov 09, 2025 |
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| PDF Title | Which Country Has the Longest Coastline in the World? |
| Category | |
| Posted By | Admin |
| Posted On | Nov 09, 2025 |
The country with the longest sea boundary (coastline) in the world is Canada.
Stretching across the Atlantic, Pacific, and Arctic Oceans, Canada’s coastline measures about 243,042 kilometers (151,019 miles) — the longest of any country on Earth. This immense length is due to Canada’s thousands of islands, bays, fjords, and inlets.

Canada’s geography includes an enormous number of islands and peninsulas. The country borders three major oceans — the Atlantic, Pacific, and Arctic — creating a coastline that is both vast and intricate.
Even though Canada’s population is relatively small compared to its land area, its marine borders are unmatched in size and diversity.
Length: About 243,042 km (151,019 miles)
Oceans: Borders the Atlantic, Pacific, and Arctic Oceans
Islands: Includes over 52,000 islands, many in the Arctic region
Longest continuous coastal region: Found in Newfoundland and Labrador
Rich biodiversity: Home to whales, seals, polar bears, and seabirds
Unique feature: Large parts of the Arctic coastline are frozen for much of the year
🇳🇴 Norway – ~58,000 km (including islands and fjords)
🇮🇩 Indonesia – ~54,000 km
🇷🇺 Russia – ~37,000 km
🇺🇸 United States – ~19,900 km

Canada has the longest sea boundary/Coastline in the world, thanks to its extensive geography and vast connection to three major oceans. Its coastline is a key part of its natural beauty, marine biodiversity, and national identity.