Stone Mountain Freeway Gwinnett County and have a partial interchange with Park Place Boulevard and Rockbridge Road. Just to the east of this interchange, the freeway ends and US 78/SR 10 continue to the east, locally known as Stone Mountain Highway. West of I-285, the speed limit is . East of the interchange with I-285, the limit rises to . Unlike Georgia's Interstate highways, the highway still has actual sequential exit numbers, rather than being mileage-based. There is no exit 6, which makes the exit numbering non-sequential. All of Stone Mountain Freeway is included as part of the National Highway System, a system
Standing Stone State Park of hiking trails are maintained in the park and forest. The most popular trail is the Lake Trail, which descends from the visitor center to Standing Stone Dam and parallels most of the north shore of the lake before reascending to the cabin area. The most substantial trail is the Cooper Mountain Loop Trail, which circles through several miles of the state forest on the slopes of Cooper Mountain before reentering the state park near Overton Lodge. The National Rolley Hole Marbles Championship is held every September at Standing Stone State Park. Rolley hole is a type of marbles game