The SKUSA SuperNationals is a multi-class karting championship featuring KA100 and X30 categories for junior and senior drivers, alongside a Pro Shifter class. The field is competitive at the amateur and semi-professional level, with top drivers including Alessandro de Tullio, Scott Hargrove and Remo Ruscitti. The series functions primarily as a destination and consolidation point rather than a feeder; drivers arrive from established single-seater championships like Star Mazda and Formula Renault Eurocup, then either settle at this level or move laterally into sportscar racing with IMSA or international endurance competition.