U.S. Route 21 (US 21)passes through Elkin. Old Business Hwy 21 is also called Bridge Street, and intersects the entire town of Elkin from the Yadkin River up to where it joins with US 21 heading north towards State Road, then to Sparta. US 21 is the route travelers would take to access North Carolina's Stone Mountain State Park. Elkin is the best place to stock up on supplies for hikers and campers heading to Stone Mountain. There is also a new RV campground in Elkin off of US 21 called Byrd's Branch Campground, which opened in 2015. Campers looking to locate closer to evening activities and amenities may wish to look into this location, if the campgrounds at the park are filled.