i don't know for sure, but may be hard to find onroad racing within 1/2 an hour of valdosta.... all else fails tallahassee, Fl runs onroad (asphalt) and is about 1-1/2 hours... i'll keep an eye out.. this list isn't perfect, but it's a start.. http://www.rcracingusa.net/tracksdtoh.htm
jacksonville, Fl races on carpet i believe
by the way, welcome, and enjoy your stay.. valdosta is a nice little town. you going to be visiting valdosta state university? not much else there from my recolection.. i lived for years in tallahassee which is a big college town and the capitol of florida..