Get ready for high-octane action as the NASCAR O'Reilly Auto Parts Series and the Enjoy Illinois 300 NASCAR Cup Series roar into St. Louis on September 12 and 13, respectively. This is a one-of-a-kind opportunity to experience the thrill of top drivers battling it out on the 1.25-mile oval track of World Wide Technology Raceway. The weekend packs in heart-pounding races, fan-favorite activities, driver meet-and-greets and live entertainment, including the Confluence Music Festival, which boasts more than 30 local acts and headlining performances. Even more exciting concert announcements still to come.