2021 Season concludes for California Prokart Challenge 2021 Season concludes for California Prokart Challenge Championships decided with sixth and final round for Superkarts! USA regional program Bas Kaligis / Monday, October 11, 2021 0 1206 Article rating: No rating The 2021 season for the California ProKart Challenge came to a close over the October 2-3 weekend with the sixth and final round of the year held at the CalSpeed Karting facility. It was the second visit to the Fontana, California facility in 2021, previously hosting the double-header weekend in June. For the series finale, the near 100 Superkarts! USA regional entries took to the ‘Classico’ layout to decide this year’s series champions. Read more