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Longest International Borders

Name the countries that lie along the world's 20 longest international borders.
Last updated: May 20, 2016
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 / 26 guessed
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Keep scrolling down for answers and more stats ...
km
Countries
8,891
Canada
United States
6,846
Russia
Kazakhstan
5,308
Chile
Argentina
4,677
Mongolia
China
4,053
Bangladesh
India
km
Countries
3,645
China
Russia
3,543
Russia
Mongolia
3,400
Brazil
Bolivia
3,380
China
India
3,141
United States
Mexico
km
Countries
2,912
Pakistan
India
2,511
Dem. Rep. of the Congo
Angola
2,430
Pakistan
Afghanistan
2,410
Dem. Rep. of the Congo
Rep. of the Congo
2,237
Mali
Mauritania
km
Countries
2,203
Kazakhstan
Uzbekistan
2,200
Brazil
Venezuela
2,185
China
Myanmar
2,130
Vietnam
Laos
2,050
Colombia
Venezuela
+4
level 73
Mar 31, 2014
Only missed African countries...but I missed ALL of the African countries.
+1
level 34
May 16, 2016
I got all Africa. The problem for me was South America for some weird reason
+4
level 31
Jan 16, 2018
didnt even think of laos and vietnam!
+1
level 45
Jan 26, 2018
Same 2
+1
level 55
Jan 22, 2018
same
+1
level 50
Apr 27, 2014
Guessed all the countries with just 6 seconds left :D
+1
level 44
Sep 21, 2014
Also got mauritania and mali with 6 seconds left, huh :)
+1
level 42
Sep 19, 2017
Got Vietnam and Laos with 11 seconds :D
+1
level 20
Jan 1, 2018
i got 1min and 46 seconds left :D
+1
level 28
Jan 11, 2018
Finished with 53 seconds left.
+2
level 57
Apr 27, 2014
Just missed Mali and Mauritania.
+1
level 29
Apr 27, 2014
Couldn't think of the country that bordered China to the south :/
+1
level 23
Apr 27, 2014
I created a new quiz with the longest international borders in Europe - check it out.
+1
level 43
Apr 27, 2014
you should accept Zaire for democratic republic of congo
+2
level 23
Apr 27, 2014
Congo stopped calling themselves Zaire in 1997
+2
level 75
Apr 27, 2014
Same problem as with Burma... Zaire was only Mobuto's idea. From the day that Kabila overthew him, the country became Congo again.
+3
level 73
May 8, 2014
and since then there hasn't been a single human rights abuse anywhere in the country.
+3
level 53
Sep 19, 2017
In the words of Dr Seuss: 'A country's a country, no matter how evil and dictatorial.' Seriously, if you can call North Korea by its name, you can do it with the DRC.
+1
level 50
Apr 27, 2014
26/26 at first try! :)
+1
level 45
Apr 28, 2014
100%! Woo hoo!
+1
level 64
Apr 29, 2014
The shortest border in the world is Zambia and Botswana - 150 m (that's meters, not miles).
+1
level 47
Nov 2, 2016
The parts of Spain on the African continent include one 85-meter border.
+1
level 58
Apr 29, 2014
Missed Mali and Uzbekistan.
+1
level 66
May 11, 2014
According to wikipedia Colombia-VENEZUELA border is 2050km long, not Colombia-Brazil
+1
level ∞
May 11, 2014
Thanks. This has been fixed.
+1
level 35
Sep 4, 2014
I missed Vietnam and Laos... shame
+2
level 33
Dec 5, 2014
24/26 on first try. Missed only Mali + Mauritania. Never have I been more proud of my random geog knowledge..;)
+1
level 30
Jan 4, 2015
Only some map projections give a realistic comparison of country areas, those further from the equator can appear larger than they would on a globe. Equatorial Africa tends to "look smaller" than it actually is. Nice quiz, thanks!
+1
level 58
Jan 4, 2015
100% with 49 seconds left. Great quiz.
+1
level 54
Feb 26, 2015
How did I miss Vietnam?!?!?!
+1
level 59
May 5, 2015
Got stuck with '2' to go, couldn't think of the partnership, and finally tried DRC, so glad I did,cause I got 100%%%%%%%:) great quiz. thanks
+1
level 75
Jul 16, 2015
got 100%! guessed vietnam and laos at the last minute! and i LIVE in vietnam!
+1
level 23
May 1, 2016
Im so happy that I got a map in my head, so I can see every country and their borders in my head, so it was easy because of that.
+1
level 21
May 15, 2016
What about Norway and Sweden? That border is huge!
+1
level 75
May 16, 2016
Yeah, it is huge... on a Mercator projection map.
+1
level 27
May 16, 2016
I only missed bangledesh. Because apparently, I can't spell it.
+1
level 44
May 16, 2016
Exactly the same!
+1
level 70
May 16, 2016
It might be worth mentioning in the instructions that borders can be broken - for example, Russia-China is broken in two by Mongolia, and the 3,645 km is the aggregate of the two lengths.
+1
level 63
May 16, 2016
100% with 59 seconds still on the clock!! Cool quiz idea!
+1
level 48
May 18, 2016
Got the lot with 24 seconds to spare.
+1
level 32
May 24, 2016
Only missed Bangladesh!!! So close!!! I was typing it in at the last second.
+1
level 53
Jul 24, 2016
Sweden and Norway have a long border.
+1
level 32
Aug 6, 2016
I missed: Bangladesh, Myanmar, Uzbekistan, Congo and DR Congo 😒
+1
level 43
Sep 5, 2016
Phew managed to get through that unscathed my memory must be back
+1
level 39
Oct 17, 2016
I missed Los. I tried every Asian except for Laos.
+1
level 55
Dec 11, 2016
Dang it, missed Afghanistan. I thought I went through all my "-stan" countries...obviously not!
+1
level 55
Feb 8, 2017
norway sweden?
+1
level 50
Feb 8, 2017
100%!!
+1
level 11
Feb 9, 2017
i missed vietnam and laos
+1
level 60
Aug 10, 2017
Did not expect Vietnam and Laos... only one I missed :(
+1
level 66
Sep 19, 2017
Just got Colombia with 1 second remaining........
+1
level 28
Dec 19, 2017
Got them all with 1 minute to spare!
+1
level 32
Mar 11, 2018
got them all except vietnam and laos. fun but challenging quiz!
+2
level 49
Mar 13, 2018
Brasil is not spelled with a Z ;)
+2
level 14
Mar 14, 2018
It is in America.
+1
level 32
Mar 30, 2018
Got them all first go..Almost missed Burma with 7 seconds to go,
+1
level 8
Apr 4, 2018
Only missed Vietnam-Laos, and Mali-Mauritania
+1
level 38
May 26, 2018
Nailed it first try with 54 seconds left. Really cool quiz though!
+1
level 57
May 29, 2018
How is Laos-Vietnam longer than Sudan-Chad for example?
+1
level 43
May 30, 2018
interesting that no-one else had problems with angola
+1
level 43
Aug 4, 2018
2:26 remaining. what am i doing?
+1
level 52
Aug 4, 2018
Hey completely off topic sorry, but there was a quiz several months ago on Jetpunk about the wealthiest countries GDP per capita for 2018 and the number one was Luxembourg. I want to look at the source to verfiy it but does anyone remember the name of that quiz on here?
+1
level ∞
Aug 4, 2018
Here's our official quiz on the subject. Monaco is #1.
+1
level 52
Aug 8, 2018
Thanks. Is Monaco still #1 for that in 2018?
+1
level 56
Aug 5, 2018
100%!!! YES!
+1
level 20
Aug 7, 2018
what about norway and Sweden