State Route 3 (SR 3) is a 351-mile-long (565 km) state highway that travels south-to-north through portions of western Georgia, roughly paralleling Interstate 75 (I-75). The route travels from its southern terminus at the Florida state line, where SR 3 and SR 300 end, concurrent with US 19. Here, US 19 travels concurrent with State Road 57, 12 miles (19 km) south-southeast of Thomasville.