 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 eMTB vehicles.