World Capitals Closest to Geographical Center of Country X

Find the 20 world capitals that are closest to the geographical center of a secret country, and find the country, too! You are shown distance as a hint
Idea from quizzes like this one by Jerry928
Geographical center data from Portland State University (https://www.pdx.edu/econ/country-geography-data), for missing countries from CIA (https://www.cia.gov/library/publications/the-world-factbook/fields/2011.html)
Quiz by scambigol
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Last updated: October 4, 2015
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First submittedOctober 4, 2015
Times taken302
Average score66.7%
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Country X:
Russia
 
 
D (km)
CAPITAL CITY
1,660
Ulaanbaatar
1,935
Astana
2,560
Bishkek
2,763
Beijing
2,930
Tashkent
3,198
Pyongyang
3,214
Dushanbe
3,370
Moscow
3,392
Seoul
3,542
Islamabad
Country X:
 
 
 
D (km)
CAPITAL CITY
3,598
Kabul
3,702
Helsinki
3,728
Ashgabat
3,757
Tallinn
3,841
Thimphu
3,874
Kathmandu
3,925
Baku
3,949
New Delhi
3,955
Riga
4,003
Minsk
+1
Level 65
Oct 4, 2015
Your 2nd caveat doesn't give a link to Portland State Uni. data, it gives a link to Jerry928's page twice. :)
+1
Level 76
Oct 4, 2015
Fixed, thanks! But it's worth visiting Jerry928's page twice anyway ;)
+1
Level 65
Oct 4, 2015
Yup!