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Countries With Highest Coast-to-Land-Border Ratio

Each of these countries has a coastline twice the length (or longer) of its borders with other countries. Can you name all such countries?
Ratio is coastline to land border length
Quiz by
interopia
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Last updated: December 29, 2025
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First submittedFebruary 25, 2017
Times taken1,856
Average score81.0%
Rating5.00
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Ratio
Country
58.5
Denmark
34.5
United Kingdom
22.7
Canada
19.3
Indonesia
11.1
Greece
10.1
South Korea
9.9
Norway
Ratio
Country
9.4
Qatar
6.3
Papua New Guinea
6.0
Estonia
4.9
Haiti
4.5
Panama
4.0
Ireland
3.9
Italy
Ratio
Country
3.6
Dominican Republic
3.1
East Timor
2.7
Turkey
2.7
Croatia
2.6
Spain
2.1
Mexico
2.0
Costa Rica
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7 Comments
+4
Level 90
Jun 26, 2022
+7
Level 80
Feb 25, 2017
nice!
+6
Level 66
Feb 25, 2017
Feature this one!
+3
Level 56
Jan 11, 2024
Very nice quiz, made me think hard. Definitely shocked this isn't already featured.
+1
Level 69
Dec 29, 2025
I'm curious about what changed in the last reset.
+3
Level 90
Dec 29, 2025
Previously it was name all countries with a ratio greater than 1, which was 36 answers. Seemed like a bit much, so I changed it to a ratio of greater than 2, so now it's 21 answers.
+2
Level 89
Dec 29, 2025
Another really good quiz.