The total length of the Western Australian coastline is 20,781 km. This is made up of 12,889 km on the mainland and 7,892 km of islands' Coastlines.
Idaho's western border is 479 miles long.
The Indian Ocean
Siberia's western border is the Ural Mountains.
The Mississippi River forms the western border of Illinois.
Cambodia is on the Vietnam western border.
Thailand lies on Cambodia's western border.
The western border of Czechoslovakia was an area known as Sudetenland.
Nebraska has a south-western border with Colorado and eastern border with Iowa.
Portugal shares Spain's western border.
California's eastern border and Arizona's western border.
It ia on the eastern border of California. The western boundary of Callifornia is the Pacific Ocean,
That depends, it's just under 80 miles on I-90 from the ID/WA border to the ID/MT border up north in the panhandle. Down south it is 408 miles on I-84