Florida State Road 21 is a north-south highway located in the state of Florida. It runs approximately 30 miles, connecting the cities of Keystone Heights and Palatka. The road serves as a vital route for local traffic and provides access to various recreational areas, including lakes and parks. The highway is primarily a two-lane road, with sections that may vary in width and condition. It intersects with several other state roads, enhancing connectivity for residents and visitors. Florida State Road 21 is an important corridor for both commuters and travelers exploring the region.