The Toccoa River and Ocoee River are actually a single river that flows northwestward through the southern Appalachian Mountains of the southeastern United States. It is called the Toccoa in Georgia, until it reaches the twin cities of McCaysville, Georgia and Copperhill, Tennessee. The remainder is called the Ocoee through Tennessee, known for its whitewater rafting, and host to whitewater slalom events during the Centennial 1996 Summer Olympics held primarily in Atlanta, about 100 miles (160 km) to the south.