ProKart challenge set for return to Spring Mountain Karting Complex ProKart challenge set for return to Spring Mountain Karting Complex New facility west of Las Vegas to host penultimate round of Superkarts! USA regional program Bas Kaligis / Saturday, September 5, 2026 0 31 Article rating: No rating The ProKart Challenge will make its second ever visit to the Spring Mountain Karting Complex. The program travels to the Pahrump, Nevada course over the September 12-13 weekend for Round Five of the Superkarts! USA regional championship series. Read more