Any great circle on the earth has a circumference of about 24,000 miles..
The circumference of the Arctic Circle (and the Antarctic circle too) is about 9,945 miles..
…Imagine circles around the North Pole. The closer to the pole the circle is, the smaller it is. If you were right there at the North Pole, you could walk a 10-foot circle around it. The Arctic Circle is a circle around the pole, but about 1,570 miles south of it..
The only circle around the pole that's a great circle is the Equator. (MORE)