The Triple Crown is a "championship" consisting of three 500 Mile Super Speedway races on the IndyCar calendar. Traditionally, the crown jewel races were events at Indianapolis Motor Speedway, Pocono Raceway, and a third race at either Ontario Motor Speedway, Michigan International Speedway, or Auto Club Speedway. In some years a driver would be recognized as a "Triple Crown Champion" if they were to score the most points in the three races; Al Unser being the only driver to win all three 500 mile races during the 1978 IndyCar Season. Even though three super speedways and three 500 mile races have been featured in many seasons, only in 1971–1989 and 2013–2015 were "Triple Crowns" recognized.

The Triple Crown concept was first suggested by Pocono Raceway General Manager Bill Marvel in 1970. Hoping to replicate the success of horse racing's Triple Crown, Pocono promoted their debut race in 1971 as joining an elite group of three 500-mile IndyCar races. Other "Crown Jewel" races included the Indianapolis 500 and the California 500 at Ontario Motor Speedway which debuted in 1970. The driver that scored the most points in the three 500 mile races would be presented with a diamond-studded gold ring. Joe Leonard won the first two Triple Crown championships in 1971 and 1972.

By 1974, several drivers criticized USAC over their lack of promotion for the Triple Crown. Shortly after Secretariat won the similar prize in horse racing, it was lamented that auto racing's Triple Crown was not similarly embraced. After Marvel left his position at Pocono, promotion of the Crown was reduced and USAC neglected to even mention Roger McCluskey won the 1973 Crown in their media guide.

"The Triple Crown was one man's dream," Mario Andretti said in June 1974. "Since Bill Marvel isn't connected here anymore, the whole thing died. It has some definite meaning, but it has to be talked about."

"It is a good publicity thing," Mark Donohue said, "but it has to be promoted. Right now everybody is just trying to win the race at hand." In June 1974, Philadelphia Daily News writer Bill Fleischman wrote, "A few years ago, Joe Leonard was honored at a dinner in Philadelphia as the first Triple Crown Winner. Leonard said he hoped his sport's Triple Crown would soon be as prestigious as horse racing's established salute. It hasn't happened. And it won't until auto racing cares enough to promote what could be an exciting attention getter."

Between 1975 and 1980, the prize was renamed the Olsonite Triple Crown and carried a $1,500 prize for the champion and an annual trophy.

In 1978, Al Unser became the first and only driver to win all three Crown Jewel races in one season. Ontario Motor Speedway closed in 1980 and its spot in the Triple Crown was replaced with a new 500 Mile race at Michigan International Speedway. In 1982, Gordon Johncock won the first two legs of the Triple Crown and looked to become the second driver to sweep the crown jewels. While running second at Pocono with six laps remaining, Johncock broke a gearbox and dashed his hopes to win all three races.

In March 1983, Domino's Pizza became the title sponsor of the Domino's Pizza CART Triple Crown Award. A $1 million prize was offered should any driver win all three Triple Crown races in one season. In addition, whichever driver scored the most points in the Triple Crown would win $10,000 and a trophy.