The 2023 Rotax MAX Challenge US Trophy Final has crowned the new champions for this season in some thrilling racing at New Castle Motorsports Park in Indiana. With drivers representing eight nations joining the competition in the five Rotax MAX categories on the program, the international clash produced exciting races in the Final showdown.

The California ProKart Challenge traveled to the CalSpeed Karting Center for the lone double-round weekend of the 2022 season. The June 24-26 event at the Fontana, California facility hosted Rounds Three and Four of the Superkarts! USA regional championship program.

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.
 

The California ProKart Challenge began the second half of the 2019 championship season, hosting Round Four at the Marina Airport Kart Track on July 13-14. The Superkarts! USA regional program took to the home of the Monterey Bay Karters for the two-day event, with practice and qualifying held Saturday, Prefinal and Final held on Sunday. The weather was unseasonably colder, with strong winds dropping the temperature, making the July weekend feel like a winter trip along the Pacific Ocean. The racing was not affected, however, as a number of drivers added to their win totals to help their title chase hopes.