The Silver Comet Trail is a 61.5-mile multi-use trail that begins at the Mavell Road Trailhead in Smyrna, located approximately 13 miles northwest of Atlanta's city center. The trail spans the route of the former Silver Comet passenger line of the Seaboard Air Line Railroad, which was implemented in 1947 and discontinued in 1969. It is accessible for walkers, joggers, hikers, cyclists, rollerbladers, and horseback riders and is pet-friendly, with well-behaved dogs permitted on leashes. The entire length of the trail is ADA-accessible, eventually ending at the Georgia-Alabama state line near the trailhead of the Esom Trail. At the state line, the trail connects to the 33-mile Chief Ladiga Trail, forming the second-longest combined multi-use trail route in the United States.