Far/farther/further afield - Idioms by The Free Dictionary
Wide-ranging, at a distance, as in I started out identifying wild mushrooms, but since then I've gone far afield in other branches of botany . [c. 1400]
far/farther/further aˈfield far away from home; to or in places that are not near: You can hire a car if you want to explore further afield. ♢ Journalists came from as far afield as China and Brazil.