was the Sports Car Club of America (SCCA) on September 10, 1955. The Road America 500 is a sports car race that was part of different championships, among them the SCCA National Sports Car Championship, the United States Road Racing Championship and the IMSA GT Championship. Currently it is a points-paying race of the IMSA SportsCar Championship. The Grand Prix of Road America is an open-wheel race that was held as part of the Champ Car World Series and currently it is a part of the IndyCar Series. Other notable series have included NASCAR's Grand National (now NASCAR Cup Series) in 1956 and NASCAR Xfinity Series since 2010, CART from 1982 until 2007, Grand-Am Rolex Sports Car Racing Series, CanAm, Trans-Am, AMA, and the SCCA National Championship Runoffs from 2009 to 2013. The Stadium Super Trucks began racing at the track starting in 2018; the trucks run a shortened course that bypasses turns 6 to 12, though the full layout is used on the final lap. Road America also holds a variety of vintage racing events, including the Brian Redman International Challenge, now the HAWK with Brian Redman. ALMS race history At the 2008 Road America 500 an Audi R10 TDI set an LMP1 pole time of 1:46.935. At the 2009 Road Race Showcase, Dyson Racing Team set an LMP2 pole time of 1:51.010. At the 2011 Road Race Showcase, BMW Team RLL set a GT pole time of 2:05.447, while at the same event a Porsche 997 GT3 set a GTC pole time of 2:14.126. NASCAR race history Cup Series One NASCAR Grand National (now NASCAR Cup Series) race was held in 1956. The track hosted two more Cup series races in 2021 and 2022 before being planned to be replaced by the Chicago Street Race in 2023. Xfinity Series On December 21, 2009, NASCAR announced that with the situation at the Wisconsin State Fair Park being unclear, and losing races at the Milwaukee Mile, they would move Milwaukee's Xfinity Series race to Road America. The first race was held on June 19, 2010 and was won by Carl Edwards. In 2015, the race moved to late August during an off-weekend for the Sprint Cup Series. 2011: Race extended due to three green–white–checker finish attempts and ended under caution when the three attempts to finish the race failed. 2013: Race extended due to two green-white-checker finish attempts. 2014, 2016,