Quote Originally Posted by The Archangel
Im assuming because i know that the water bunshin at least does have a distance limit for it to work.

I mean if not what would stop a ninja from sending a kage bunshin fight for him in every single mission? Just doesnt make sense i think.
To make assumptions about this is pointless. To say "kage bunshins surely don't survive so far away from the original." in a direct statement, as though it were fact, is irresponsible. Nothing has been stated in the manga and no evidence has ever been given to support such a statement.