The Interstate Racing Association (IRA) Sprint Car Series is a prominent sprint car racing organization that operates primarily in the Midwestern United States. Founded in the mid 1960's, the IRA has a rich history of promoting high-quality sprint car racing events across various tracks in the region. The series features powerful, winged sprint cars that compete on dirt tracks, providing thrilling racing action for fans. The IRA Sprint Car Series is known for its competitive racing, attracting talented drivers and teams from across the country. The series typically runs around Wisconsin, Illinois, and Iowa, with events held at well-known tracks such as Angell Park Speedway and 141 Speedway. The IRA Sprint Car Series has a dedicated fan base and continues to be a significant part of the grassroots racing scene in the Midwest.