The Great Smoky Mountains Parkway is a highway that travels 23.4 miles (37.7 km) between the Great Smoky Mountains National Park and Interstate 40 in Kodak, Tennessee, in East Tennessee. It serves as the main thoroughfare for Gatlinburg, Pigeon Forge, and Sevierville, and includes a 4.3-mile (6.9 km) spur of the Foothills Parkway. It is composed of sections of a number of numbered highways, including U.S. routes 441 and 321 and state routes 66 and 448.