IndyCar Series 2026 6 2026-05-09 2026-05-09 https://r2.thesportsdb.com/images/media/event/thumb/3bkdlw1766855580.jpg https://r2.thesportsdb.com/images/media/event/poster/yb9q8s1766856120.jpg The Sonsio Grand Prix serves as a lead-in to the Indianapolis 500. Support races are held, including Indy Lights, Pro Mazda and U.S. F2000. From 2014 to 2016, the race was known as the Grand Prix of Indianapolis, and from 2015 to 2016 it was sponsored by Angie's List. For 2017, the Angie's List title sponsorship was dropped, and the race name was changed to the IndyCar Grand Prix. This was done in order to reduce confusion with the previous Formula One grand prix race that used to be held there, and to emphasize to fans that the race was part of the American-based IndyCar Series. 2402402