Some great nearby trails are located at Garland Mountain in Waleska/Cherokee County.  Just off of GA Highway 140, the trails were specifically dedicated for equestrian use and made by the Cherokee Saddle Club.

My friend Jo took me last year.  It was a great ride!  Still working with my green horse, Lady, who loves to take major leaps over small trickles of water.  Can't wait to get back there this year!  I've just been so busy selling real estate, it's long over due!