California ProKart Challenge opens 2023 season at Buttonwillow California ProKart Challenge opens 2023 season at Buttonwillow First regional victories on the season for nine drivers following two days of action Bas Kaligis / Monday, March 20, 2023 0 718 Article rating: No rating The opening weekend for the 2023 California ProKart Challenge took place over March 11-12 at the Buttonwillow Raceway Park. Nearly 100 competitors participated on the weekend at the California facility with two full days of action for the first event of the six-round championship program. The 7/10-mile circuit in the counter-clockwise direction welcomed nine drivers earning their first victories on the season at the Superkarts! USA regional program. Read more