The NASCAR Xfinity Series (NXS) is a stock car racing series organized by NASCAR and it is promoted as NASCAR's "minor league" circuit.
The F2 championship was introduced in 2017, following the rebranding of the long-term Formula One feeder series GP2.
The FIA W Series is an all-female single-seater racing championship. The series' first season was in 2019 and it featured 20 drivers.
The IndyCar Series is the highest class of regional North American open-wheel single-seater formula racing cars in the United States.
The Autodromo Vallelunga Piero Taruffi is a racing circuit situated 32 km (20 mi) north of Rome, Italy, near Vallelunga of Campagnano.
WorldSSP runs as a support class to the Superbike World Championship with race takes place at almost every Superbike World Championship round.
The motorcycles that race in the championship are tuned versions of motorcycles available for sale to the public.
The ABB FIA Formula E World Championship is a single-seater motorsport championship held since 2014 for electric cars.