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Countries with the Longest Coastline Bordering Each Other

Name the countries with the longest coastline that border each other.
Using Quizmaster's coastline data. More info here
Methodology: Each country is ranked 1-196 based on Coastline length
An average rank between bordering countries was calculated, these are the lowest averages overall
Quiz by Stewart
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Last updated: May 10, 2019
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First submittedMay 9, 2019
Times taken5,389
Average score87.5%
Rating4.57
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Avg
Countries
2
Canada
United States
5
Norway
Russia
6.5
China
Russia
8
Mexico
United States
10
Indonesia
Papua New Guinea
12
Brazil
France
14
China
India
14
Norway
Sweden
15
Argentina
Chile
16
Argentina
Brazil
Avg
Countries
16
China
Myanmar
16.5
Indonesia
Malaysia
18
Brazil
Venezuela
18
China
Vietnam
18
Finland
Russia
18.5
France
Italy
19
India
Myanmar
21
Finland
Norway
21.5
Greece
Turkey
21.5
Spain
United Kingdom
11 Comments
+4
Level 76
May 12, 2019
nice! you could also make versions where the border has to be on the coast or not on the coast. Eg Brazil-Venezuela border isn't on the coast, Mexico-United States is
+2
Level 68
May 12, 2019
Interesting! I'll explore the idea, thank you!
+1
Level 71
Apr 5, 2020
couldn't think of Greece and Turkey, typed them with 6 seconds left, great quiz
+1
Level 73
Sep 9, 2020
Same for me, except I had 18 seconds left.
+2
Level 48
Feb 22, 2021
Might want to clarify that land borders (like china-myanmar) are included. Great quiz! nominated!
+1
Level 42
Mar 11, 2022
I wrote nearly 100392 times Ireland, before giving up. Thank u Gibraltar... xD
+2
Level 68
Dec 13, 2022
I was thinking which coastal country besides Morocco, France and Portugal borders Spain...
+1
Level 82
Dec 13, 2022
Interesting idea! I think each pair's total length of coastline would be a more intuitive thing to list here. Average rank is such an abstract concept.
+2
Level 60
Aug 3, 2023
Not really, since they're ranked by average rank. If average coastline was used, then larger countries would dominate (anything with Russia). This way, both countries have to be fairly coastal.
+1
Level 82
Oct 12, 2023
Fair point.
+1
Level 64
Oct 12, 2023
Is the Spain-UK border due to Gibraltar? Gibraltar isn't technically a part of the UK so I'm not sure it should count.