The International Motor Sports Association (IMSA) is a North American sports car racing sanctioning body based in Daytona Beach, Florida under the jurisdiction of the ACCUS arm of the FIA. It was started by John Bishop, a former executive director of SCCA, and his wife Peggy in 1969 with help from Bill France Sr. of NASCAR. Beginning in 2014, IMSA is the sanctioning body of the WeatherTech SportsCar Championship, the premier series resulting from the merger of Grand-Am Road Racing and the American Le Mans Series. IMSA is owned by NASCAR, as a division of the company.
IMSA GT was a sports car racing series organized by International Motor Sports Association. Races took place primarily in the United States and occasionally in Canada.
The 1995 Exxon World Sports Car Championship and Supreme GT Series seasons were the 25th season of the IMSA GT Championship. It consisted of open-cockpit prototypes referred to as the World Sports Car (WSC) class and Grand Tourer-style racing cars divided into GTS-1 and GTS-2 classes. It lasted eleven rounds and began on February 4, 1995, and finished on October 8, 1995.
The 1994 Exxon World Sports Car Championship and Supreme GT Series seasons were the 24th season of the IMSA GT Championship. It was the first year for the new World Sports Car (WSC) class of open-cockpit prototypes in the premiere category, replacing the previous closed-cockpit GTP class. Grand Tourer-style racing cars were also raced and ran in the GTS, GTO, and GTU classes. It began February 5, 1994, and ended October 1, 1994, after nine rounds.
The 1993 Camel GT Championship and Exxon Supreme GT Championship seasons were the 23rd season of the IMSA GT Championship auto racing series. It was the final year of the Camel's sponsorship of the prototype class, and the final year of the GTP and GTP Lights prototype categories before they were replaced with the World Sports Car (WSC) class of prototypes the following year.
The 1992 Camel GT Championship and Exxon Supreme GT Series seasons were the 22nd season of the IMSA GT Championship auto racing series. It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTS, GTO, and GTU classes. It began February 1, 1992, and ended October 11, 1992, after fifteen rounds.
The 1991 Camel GT Championship and Exxon Supreme GT Series seasons were the 21st season of the IMSA GT Championship auto racing series. It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes, as well as a tube-frame All-American Challenge (AAC) class during select rounds. It began February 2, 1991, and ended October 13, 1991, after nineteen rounds.
The 1990 Camel GT Championship season was the 20th season of the IMSA GT Championship auto racing series. It consisted of GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes, as well as a tube-frame All-American Challenge (AAC) class during select GT-only rounds. It began on February 3, 1990, and ended November 11, 1990, after twenty rounds.
The 1989 Camel GT Championship season was the 19th season of the IMSA GT Championship auto racing series. It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes, as well as a tube-frame American Challenge (AC) class during select GT-only rounds. It began February 4, 1989, and ended October 22, 1989, after twenty rounds.
The 1988 Camel GT Championship season was the 18th season of the IMSA GT Championship auto racing series. It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes. It began January 30, 1988, and ended October 23, 1988, after seventeen rounds.
The 1987 Camel GT Championship season was the 17th season of the IMSA GT Championship auto racing series. It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes. It began January 31, 1987, and ended October 25, 1987, after 21 rounds.
The 1986 Camel GT Championship season was the 16th season of the IMSA GT Championship auto racing series. It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes. It began February 1, 1986, and ended October 26, 1986, after eighteen rounds.
The 1985 Camel GT Championship season was the 15th season of the IMSA GT Championship auto racing series. It was for prototypes in the existing GTP class and new, smaller Lights class, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes. It began on February 2, 1985, and ended on December 1, 1985, after seventeen rounds.
The 1983 Camel GT Championship season was the 13th season of the IMSA GT Championship auto racing series. It was for GTP class prototypes and GTO and GTU class Grand Tourer-style racing cars. It began February 5, 1983, and ended November 27, 1983, after seventeen rounds.
The 1982 Camel GT Championship season was the 12th season of the IMSA GT Championship auto racing series. It was the first year of the GTP class, which combined the previous GTX class of Group 5 cars and prototypes. Other competitors ran in the GTO and GTU classes of Grand Tourer-style racing cars. It began January 30, 1982, and ended November 28, 1982, after nineteen rounds.
The 1981 Camel GT Championship season was the 11th season of the IMSA GT Championship auto racing series. It was a series for GTX class Group 5 cars and GTO and GTU class Grand tourer cars. It began January 31, 1981, and ended November 29, 1981, after sixteen rounds.
The 1980 IMSA GT Series season was the 10th season of the IMSA GT Championship auto racing series. It was a series for GTX class Group 5 cars and GTO and GTU class grand tourer cars. It began February 2, 1980, and ended November 30, 1980, after fourteen rounds.
The 1977 Camel GT Challenge season was the 7th season of the IMSA GT Championship auto racing series. The series was for GTO and GTU class Grand tourer racing cars. It began February 5, 1977, and ended October 26, 1977, after sixteen rounds.
The 2014 United SportsCar Championship was the inaugural season of the International Motor Sports Association's new series created out of a merger of the Rolex Sports Car Series and the American Le Mans Series and the first to be held under the name as the United SportsCar Championship. It began with the 24 Hours of Daytona, the first time since the 1997 IMSA GT Championship season that IMSA sanctioned an event at Daytona International Speedway on 25 January and ended on 4 October at Petit Le Mans. It was the 44th overall season of IMSA GT championship racing tracing its lineage to the 1971 IMSA GT Championship.
The 2019 IMSA SportsCar Championship was the 49th motor racing championship sanctioned by the International Motor Sports Association (IMSA). It was the sixth season of the United SportsCar Championship and fourth to be held under the name as the IMSA SportsCar Championship. It began on January 26 with the 24 Hours of Daytona, and ended on October 12 with the Petit Le Mans. The 2019 season marked the 50th anniversary since the founding of the International Motor Sports Association.
#00 Kreepy Krauly Racing
#4 Stratagraph Inc.
Brian Redman 
#48 DeNarvaez Enterprises
Hans Heyer 
Stefan Johansson