SUBSIDIARIES OF THE REGISTRANT Americrown Service Corporation, a South Carolina Corporation The California Speedway Corporation, a Delaware Corporation d/b/a California Speedway Chicago Holdings, Inc., a Nevada Corporation Competition Tire South, Inc., a Delaware Corporation Competition Tire West, Inc. a Michigan Corporation Event Equipment Leasing, Inc., a Florida Corporation Event Support Corporation, a Florida Corporation Great Western Sports, Inc., an Arizona Corporation, d/b/a Tucson Raceway Park Homestead-Miami Speedway, LLC a Delaware LLC d/b/a Homestead-Miami Speedway ISC Properties, Inc. a Florida Corporation ISC Publications, Inc. a Florida Corporation Kansas Speedway Corporation, a Kansas Corporation Kansas Speedway Development Corp. a Kansas Corporation Miami Speedway Corp., a Nevada Corporation Michigan International Speedway, Inc. a Michigan Corporation d/b/a Michigan Speedway Motor Racing Network, Inc., a Florida Corporation Motorsports Alliance, LLC a Delaware LLC Motorsports International Corp. a Pennsylvania Corporation New York International Speedway Corporation a Delaware Corporation North American Testing Company, a Florida Corporation North Carolina Speedway, Inc., a North Carolina Corporation d/b/a North Carolina Speedway Pennsylvania International Raceway, Inc. a Pennsylvania Corporation d/b/a Nazareth Speedway Phoenix Speedway Corp., a Delaware Corporation d/b/a/ Phoenix International Raceway Regiment, Inc. a North Carolina Corporation Richmond International Raceway, Inc. a Delaware Corporation Rocky Mountain Speedway Corporation a Colorado Corporation Seasonal Services, Inc., a Florida Corporation South Carolina International Speedway Corporation, a South Carolina Corporation, d/b/a Darlington International Raceway Watkins Glen International, Inc., a New York Corporation d/b/a Watkins Glen International 88 Corp. a Delaware Corporation