US 70 passes through Greensboro in concurrency with Interstate 40, Interstate 85 Business, then US Routes 29 and 220 briefly, then heads east through the Wendover Avenue expressway, which takes the route out of town towards Burlington. It downgrades to a two lane rural road heading out of Greensboro, and again parallels north of I-40/I-85. Entering Alamance County, it expands to a four-lane expressway through the city of Burlington, then returns to 2 lanes through Mebane, Efland and Hillsborough. It joins I-85 briefly in Eno, then veers southeast through the downtown areas of both Durham and Raleigh.