That's much more open that an instanced BG such as Warsong Gulch; I imagine Warsong Gulch would be much less intensive processing that trying to load up an entire area of a continent effectively.
In-short, your range will be limited in the World and not in Instances; So you'll be able to track it, but Only as far as you can see. But even with that you have a huge advantage over other players.
Hope this clears some things up..