Answer

40,000 miles (64,374 kilometers)

Explanation

The question is asking about the total distance that Alexander the Great traveled during his conquests. Alexander the Great, the king of Macedonia, embarked on a series of military campaigns that lasted for over a decade. His conquests stretched from Greece through Asia Minor, Egypt, Persia, and into India. The exact distance of his travels is not definitively known, but it is estimated that he covered approximately 40,000 miles (64,374 kilometers). This makes him one of the most far-traveling military leaders in history.