The 2025 season concluded for the ProKart Challenge following the action on October 11-12 at the K1 Circuit. The Winchester, California, facility welcomed the Superkarts! USA regional program to close out its 21st season. A total of 161 entries battled around the 1.1-mile ‘Pro Track’ course for the sixth and final round of the 2025 championship.

Two decades of racing completed in September for the California ProKart Challenge. The Superkarts! USA regional program hosted five events, featuring six rounds of competition throughout southern California. It was another successful year, experiencing tight racing in every category, while the organization awarded over $50,000 in prizes over the course of the season, including weekend and championship awards.