Round three of California ProKart Challenge set for Santa Maria Round three of California ProKart Challenge set for Santa Maria Superkarts! USA regional championship program heads to coastal region to end first half of season Bas Kaligis / Friday, June 30, 2023 0 430 Article rating: No rating The 2023 California ProKart Challenge returns to action on the July 8-9 weekend with a trip to the Santa Maria Karting Association facility. The third round of the Superkarts! USA regional program will be held at the Santa Maria, California facility. Following two events at the Buttonwillow Raceway Park to open up the year, the California PKC program reaches the midway point with the third event to continue the 19th championship season with a perfect sunny, breezy beach climate expected for Round Three. Read more