There are hunter/jumper orientated barns, eventing orientated barns, dressage, western, reining...but no endurance/CTR orientated barns (that I've heard of).
Why do you think that is?
If there was one near you, do you think you would utilize it? If not, why?
What amentities would you think a self-proclaimed "endurance" barn to have? (or in your dreams would have?)