Midget racing has a history in the United States stretching back to the early twentieth century, predating USAC itself. When the American Automobile Association withdrew from sanctioning motor racing after the 1955 season, USAC was established by Indianapolis Motor Speedway owner Tony Hulman and assumed control of midget racing at the national level alongside sprint cars and championship cars. Midget racing's compact format — small, lightweight cars with large relative power outputs, racing on short oval tracks — made it accessible to a wide range of venues and drew competitive fields that served as proving grounds for future IndyCar and NASCAR talent.
Midget cars run substantially smaller than sprint cars, with lower overall horsepower but similarly high power-to-weight ratios relative to their size. The USAC National Midget series has raced on both dirt and paved surfaces throughout its history, giving it a versatility across track types not always seen in the sprint car or Silver Crown championships.
The USAC National Midget Championship awards points across all sanctioned events in the season, with the champion determined by cumulative performance over the full calendar. The series forms part of USAC's broader national competition framework, and midget results contribute to the multi-series Mike Curb "Super License" National Championship Award that has been contested since 2010 to identify the most accomplished across the three disciplines.
USAC also operates the Western States Midget Series, a regional complement to the national championship, which was launched in 1982 using the same cars and engines as the national series. The Western States series runs dirt ovals in California and Arizona and co-sanctions select events with the national championship, including the historic Turkey Night Grand Prix. The Speed2 Midget Series, formed in 2002, provides a lower-cost entry level using production-based four-cylinder engines in place of the high-powered units used at the national level.
The USAC midget championship is one of three titles making up the triple crown — the sprint car, midget, and Silver Crown championships — which only two drivers have won in a single season: Tony Stewart in 1995 and J. J. Yeley in 2003. Several others have completed the crown across multiple years, with Pancho Carter, Dave Darland, Jerry Coons Jr., Tracy Hines, Chris Windom, and Logan Seavey each having won all three titles at some point in their careers. Because midgets, sprint cars, and Silver Crown cars differ markedly in weight, size, and handling, winning all three demands adaptability of a high order.
The midget series has historically been one of the most talent-rich competitions in American open-wheel racing, producing drivers who graduated to IndyCar and NASCAR. Tony Stewart's 1995 campaign remains one of the defining seasons in USAC history, completing the triple crown in a single year. Bryan Clauson was one of the most complete USAC drivers of the modern era, winning the multi-series national championship three consecutive years from 2010 to 2012. Logan Seavey, from Sutter, California, won the USAC national multi-series championship in 2024.
A.J. Foyt, Mario Andretti, and other legends of American racing competed in midget cars early in their careers, establishing the series' reputation as both a prestigious championship and an indicator of future talent. The midget's nimble, responsive character has long been considered an excellent teacher of racecraft, as drivers must manage oversteer, limited traction, and high mechanical loads in a compact, unforgiving package.
The National Midget championship exists alongside the Sprint Car and Silver Crown series as one of USAC's three national disciplines, each requiring a distinct skill set. Midgets are smaller and lighter than sprint cars, and unlike the Silver Crown cars — which are run at longer tracks including the Indianapolis Motor Speedway — midgets are at home on the smallest and most technical oval circuits. Together, the three series have defined USAC's identity as the preeminent body for American oval short-track racing since the organisation's founding.