Cuba is about 90 miles from the northern side of Jamaica to the southern end of Cuba
Jamaica is about 250 miles/400 kilometers south of the eastern end of Cuba. (more like 80 or 90 miles/(150 kilometers or so) south of the eastern end of Cuba)
3000
There are about 32.1 miles from one end of Calgary to the other end.
24906 miles xD
Land's End to John-o-Groats is 837 miles
300
East-West, roughly ten miles North-South, roughly thirty miles
The coast of southern Florida. Key West Florida is approximately 90 miles from Cuba.
Lands End to Alnwick (last place before Scotland) would be about 500 miles
5.3 miles
182 miles end to end