SR 370 begins just northwest of
Plainview at an intersection with
SR 144. It goes northeast as an unnamed roadway between two ridges before joining Bull Run Road after crossing a ridge. The highway, now known as Bull Run Road, goes down a valley as it passes through the community of
Potato Valley. SR 370 then leaves the community and continues northeast through farmland to come to an end at an intersection with
SR 61 just southeast of
Maynardville. The entire route of SR 370 is a rural two-lane highway. ==Major intersections==