This game world is not large enough to allow for d&d ranges. You cannot even see/detect villains as far away as the standard bow range, meaning they are not drawn that far away. Unfortunately, technical limitations are going to be a real factor.
It helps to think of the world kind of like a realtime strategy game - distances, sizes, etc are adjusted so that the temple is only a few hundred yards from the druid grove instead of the actual distance of many miles it would have to be to make it unlikely for the goblins to have found it yet.
