Most dont race every weekend, that gets expensive to the racer, but they will race quite often. With that being said you are in a great area when it comes to karting. Tracks all around. Millbridge, Woodleaf, Liberty, Coleridge, Iron City, Hanging Rock, Fastrax, Stateline, and im sure im forgetting others, are all within fairly close proximity.
If you travel just a bit farther, then a whole bunch more tracks can be came upon.
Charlotte and the Greenville/Spartanburg are 2 places where theres a ton of tracks nearby. Then over on the coast theres quite a few as well.