Thunderhill Raceway Park makes its first appearance on the Hoosier Super Tour schedule with a unique event hosted by SCCA’s San Francisco Region on Friday and Saturday, followed by a non-Super Tour event Sunday. Located in Willows, CA, Thunderhill held its first Club race in 1993 on a 1.9-mile course. The circuit has been substantially expanded since then to include a three-mile and five-mile layout that contains 200 feet of elevation change. For Hoosier Super Tour races, the three-mile course will be used – but modified slightly from Friday to Saturday with inclusion of the track’s chicane.