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AMA Dirt Track Grand Championship to take place July 6-10 in Illinois 
The 2015 AMA Dirt Track Grand Championship will take place July 6-10 at the Du Quoin State Fairgrounds in Du Quoin, Ill. Since 1975, the AMA Dirt Track Grand Championship has pitted top amateur dirt trackers against each other in friendly competition, said AMA Track Racing Manager KenSaillant.