Second stop for California Prokart Challenge on docket Second stop for California Prokart Challenge on docket Reverse direction at Buttonwillow Raceway Park as 2024 championship season continues Bas Kaligis / Tuesday, April 16, 2024 0 510 Article rating: No rating The 20th season of the California ProKart Challenge will continue on the April 20-21 weekend with a return to the Buttonwillow Raceway Park. The Superkarts! USA flagship regional series kicked off the 2024 season in March with its first visit to the Buttonwillow, California facility and will make another trip for the second round of the championship. This time, competitors will contest the 11-turn, 7/10-mile circuit in the clockwise direction. Read more