The AMSOIL Grand National Cross Country Series is an American motorcycle racing series. The off-road race series was founded by Dave Coombs in 1975 and is sanctioned by the American Motorcyclist Association (AMA). The competition is similar to motocross but, instead of using an enclosed race track, it features extended cross-country, off-road courses of 8 to 12 miles in length and competitions lasting up to 3 hours. GNCC races are physically demanding, leading as many as 2,200 riders through tracks ranging from woods, to hills, mud, rocks, roots, motocross track sections and more. The series has classes for off-road motorcycles, ATV and UTV vehicles. GNCC Racing is open to both professional and amateur racers in a variety of skill level and age classes. The current title sponsor is Amsoil,