Historic Sportscar Racing
Historic Sportscar Racing (HSR) is an automobile club and sanctioning body that supports historic racing in the United States. The organization traces its roots to the first running of the Walter Mitty Challenge in 1977 at Road Atlanta.
About Historic Sportscar Racing
Historic Sportscar Racing is a GT and sports car series based in the United States sanctioned by HSR. It is recognized as a grassroots/club-level championship.
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