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U.S. States with the Longest International Borders

Which ten states of the U.S. share the longest borders with a different country?
Includes lake and river borders
Quiz by gjcsarris
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Last updated: November 10, 2022
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First submittedJanuary 12, 2016
Times taken42,435
Average score90.0%
Rating4.81
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Keep scrolling down for answers and more stats ...
miles
states
km
1538
Alaska
2475
1241
Texas
1997
721
Michigan
1160
611
Maine
983
547
Minnesota
880
miles
states
km
545
Montana
877
445
New York
716
427
Washington
687
373
Arizona
600
310
North Dakota
499
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26 Comments
KoljiVriVoda
+4
Level 79
Jan 13, 2016
I missed the 5th one grrrr
gjcsarris
+3
Level 69
Jan 13, 2016
Oh, welcome to my quiz! Congratulations on your quizes by the way!
KoljiVriVoda
+2
Level 79
Sep 5, 2016
Haha, I totally forgot about this quiz. I deleted mine.
gjcsarris
+2
Level 69
Sep 5, 2016
Thanks!!!!
ShievaAndGolly
+2
Level 58
Feb 15, 2023
lol
VolcanicPenguin
+2
Level 68
Jun 20, 2023
I missed Texas and Arizona because I thought it was just Canadian border.
Findlay
+1
Level 81
Nov 10, 2022
I feel like there's too much time. I've completed the US states speed run (50 states in 60 seconds). Here the challenge is to guess which of the 17 US states with international borders make the top 10 in 90 seconds. Not very challenging. I like the quiz concept, I just think it needs to be fine-tuned.
AlmostAGenius
+17
Level 85
Nov 10, 2022
Maybe you have completed the speed run, but not that many other people have. It’s not a speed quiz anyway, it’s a knowledge quiz.
TinteEalaine
+10
Level 55
Nov 10, 2022
For non-Americans it is more challenging and need that extra time to visualise where they are located and if they have a border or not
pinkysbrain
+8
Level 86
Nov 11, 2022
This is a knowledge quiz..If speed typing is your thing there are plenty of them on jetpunk . Some of us are not fast at typing but like doing quizzes so the time on this is fair especially for any non US players.
WanderLust
+1
Level 98
Nov 10, 2022
I got this with 1 second to go! For some reason, Montana wasn't coming to me until the end. Whew!
ItzIngenious
+1
Level 66
Dec 17, 2022
Alaska almost got me…
Tykingcrystal
+3
Level 52
Dec 17, 2022
Montana looks like it has a huge border so I was surprised to find out Maine's is longer
Factoriel41
+2
Level 52
Dec 17, 2022
Not so surprising in fact, as Montana's border is a straight line, while Maine's one is a sinuous arc.
GlassMonkeyCode
+1
Level 69
Dec 17, 2022
fun and an easy 5 points
Nimbus87
+1
Level 59
Dec 17, 2022
As someone from Michigan, I am surprised that we have the third longest international border.
Firefoxx51
+1
Level 47
Mar 11, 2025
It makes sense though because of the borders with Canada in the Great lakes + Lake St. Clair.
communisteggplant
+1
Level 74
Dec 17, 2022
Missing Oklahoma's border with the Republic of Texas
bn9043
+1
Level 64
Dec 18, 2022
No that border actually isn't long enough to qualify

Its 11th with 309 miles

McKenzieFam
+1
Level 68
Oct 20, 2024
r/whoooosh?
SwimmerBirb
+1
Level 28
Jun 20, 2024
nyc is for new york city not the state of new york
McKenzieFam
+2
Level 68
Oct 20, 2024
Was stumped after trying every state on the US-Canada border and still missing two. Remembered Mexico exists with 30 seconds to spare
Goatmann11
+1
Level 34
Oct 20, 2024
New mexico?
TurkeyCookTime
+2
Level 83
Oct 20, 2024
NM's southern border is mostly blocked by Texas.
TheSovietOnion
+1
Level 48
Oct 21, 2024
I forgot Alaska existed lol
RedStar12345
+1
Level 53
May 1, 2025
I completely missed the 1st state in this quizz ...!
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