
The race at Road America has become the place for many drivers to notch their first Ind圜ar victory. The remaining 47 laps were run on October 4, with 1989 champion Emerson Fittipal winning. It began on September 21 but, due to rain, stopped the race three laps in. The 1986 race is the only event with a different start and finish date. Mario Andretti won three of the following five races, including his championship season in 1984. It was typically held in August or September in the early years, making it a pivotal round for the championship. It quickly became a popular event due to the competitive races and the scenic track. Road America was one of many races added to Ind圜ar during the 1980s, like Detroit and Long Beach. Mexican driver Héctor Rebaque won the first race in his only career CART/Ind圜ar victory.

The Sonsio Grand Prix at Road America first appeared on the Ind圜ar (then-CART) calendar in 1982. The length, high speeds, and mix of corners make it an exciting race for drivers and fans alike. It’s also one of the most extended courses on the schedule.

It first held an Ind圜ar race in 1982, making it one of the more senior races on the calendar. It occurs on one of the oldest road racing courses in the U.S. The Sonsio Grand Prix at Road America is the eighth round of the 2023 Ind圜ar Series season.
