CARY, N.C., Oct. 21, 2014 /PRNewswire-USNewswire/ -- GNC franchises in the Triangle Area of North Carolina announced today a title sponsorship of the Tobacco Road Half-Marathon, the sister event to the Allscripts Tobacco Road Marathon (TRM) presented by Inside-Out Sports. The franchises are located in Holly Springs, Park West Village of Morrisville and North Hills of Raleigh.