Geographic Curiosities - Distances between the New and the Old World

Which North American country is closest to Africa? Answer: Canada.

St. Johns - Casablanca: 4051 km

Which American state is closest to Africa? Answer: Maine.

Lubec, Maine - Bu Jaydur: 5095 km

Which American state is closest to Bosaso in Somalia? Answer: Alaska.

Wainwright, Alaska -Bosaso: 10650 km

For almost all of Africa, the closest American state is Maine, but Bosaso is one of the few exceptions. 

Lubec, Maine - Bosaso: 11103 km

Maps and data from WolframAlpha.