The 25th Anniversary Air Nautiques/AMA Amateur National Motocross Championships at Loretta Lynn’s is the world’s most prestigious amateur motocross race. Over 23,000 entries attempted to qualify in 33 classes for the event, which began Monday July 31st, with motos beginning Tuesday, August 1st and concluding on Saturday, August 5th. As proof of the importance of winning an AMA Amateur National Championship, most of today’s top motocross and supercross racers, including Ricky Carmichael and James Stewart, won championships at Loretta Lynn’s before turning pro. Sponsors include Air Nautiques, Amsoil, Maxxis, Thor, Honda, Yamaha, Kawasaki, Suzuki, KTM, Parts Unlimited, O’GIO, FMF, Toyota, Gatorade, Freestyle Watches, Wiseco, Kicker, Cobra, Liquid Performance, CTi, Boyesen MotoTees, Alpinestars, Scott, Twin Air, Renthal, DC Shoes, EK Chain, DeCal Works and AGV Helmets.