The National Association for Stock Car Auto Racing (NASCAR), founded by Bill France Sr. is the largest sanctioning body of stock car racing in the United States.The three largest racing series sanctioned by NASCAR are the Monster Energy Cup Series, the Xfinity Series, and the Camping World Truck Series. It also oversees NASCAR Local Racing, the Whelen Modified Tour, the Whelen All-American Series, and the NASCAR iRacing.com Series.

NASCAR Cup Series Information
Xfinity Series Information
Camping World Truck Series

The Indy Racing League (IRL) under the name of INDYCAR, is the governing body for the NTT IndyCar Series and developmental series. Featuring open wheel Indy Car racing at a variety of locations in Canada and the United States.

NTT IndyCar Series

The Indy NXT Series Presented by Firestone formerly known as the Indy Lights Series, the CART American Racing Series (1986-1990), Firestone / Dayton Indy Lights (1991-2001), Infiniti / Indy Pro Series (2002-2007) and the Firestone Indy Lights Series (2008-2013). Indy NXT Series is an American developmental automobile racing series sanctioned by IndyCar. Indy NXT Series is the highest step on the Road to Indy, a program of racing series leading up to the IndyCar Series.

Indy NXT Series Presented by Firestone

The FIA Formula One World Championship is the open wheeled auto racing series sanctioned by the Fédération Internationale de l'Automobile (FIA). Commonly known as Formula One, Formula 1 or F1, the season consists of a series of races (Grands Prix) held throughout the world.

FIA Formula 1 Racing

This open wheeled series was run from 1979 to 2008, when it declared bankruptcy and teams remaining merged with the IRL (IndyCar Serioes).

Champ Car Series

The series was run between 1974 to 2006 matching different race series champions against each other in equally matched race cars.

International Race of Champions (IROC)