David - you're not Elizabeth's roommate, are you?
I have my 2 horses boarded at a farm about 25 minutes from campus. Not sure what you consider cheap, but I pay $400/mo for full care. It's a very well kept barn, 16 stalls (all are currently full, however - but they will put you on a waiting list), lovely hay, a nice big indoor, daily turnout. There is no outdoor ring per se, but there is a grass field that we can ride/jump in when the footing is dry enough, and you can ride all over the property.
I have a friend who boards at Hunters Creek Equestrian Center (I think they have a website) and it seems like a nice facility. She is pretty happy there. I think their board is in a similar range, and they have an indoor and outdoor arena, not sure about trails, etc. I believe they have more of a lesson program there, so if that's something you need I'd definitely check it out. We don't have a resident trainer at my barn - it's more of a pleasure riding kind of place, although some of us do show and jump (I do dressage as well - used to event but no time/money anymore!)
Let me know if you have other questions. I don't know much about a lot of the facilities in the area, but I do know a few to avoid!