Plenty of trails.
From I-985/Buford Take GA Hwy 20 West, from GA 400/Cumming, take Ga Hwy 20 East, to North on Suwanee Dam Road. Go three miles and go left on Buford Dam Road. The Visitor Center is one mile down on the right.
http://www.tripleblaze.com/trail.php?c=3&i=6447