The Hoosier Racing Tire SCCA^® Super Tour (HST) gets rolling in 2026 with its annual visit to Buttonwillow Raceway Park, located in the southern portion of California’s Central Valley alongside Interstate 5 between San Francisco and San Diego. The two-day meetup will traverse the 2.579-mile, 10-turn course known as The Circuit at Buttonwillow Raceway Park. This will be only the second year that layout has been used for HST competition, and SCCA’s Cal Club Region is excited to host another fantastic weekend of racing and fun. (Photo by Wedrick Campbell/First Place Visuals)