Circuit of the Americas (COTA) is a grade 1 FIA-specification 3.426-mile (5.514 km) motor racing track and facilities located within the extraterritorial jurisdiction of Austin, Texas. The facility is home to the Formula One United States Grand Prix, the IndyCar Classic, and the Motorcycle Grand Prix of the Americas, a round of the FIM Road Racing World Championship, as well a round of the Americas Rallycross Championship. It previously hosted the Australian V8 Supercars, the American Le Mans Series, the Rolex Sports Car Series, the FIA World Endurance Championship, and the IMSA WeatherTech SportsCar Championship. NASCAR will begin racing at the circuit in 2021.

The circuit and Grand Prix were first proposed in the middle of 2010. The circuit was the first in the United States to be purpose-built for Formula One. The layout was conceived by promoter Tavo Hellmund and 1993 Motorcycle World Champion Kevin Schwantz with the assistance of German architect and circuit designer Hermann Tilke, who has also designed the Sepang, Shanghai, Yas Marina, Istanbul, Bahrain, Yeongam, and Buddh circuits, as well as the reprofiling of the Hockenheimring and Fuji Speedway. The circuit has an FIA Grade 1 license.

On September 30, 2020, it was announced that COTA would host a NASCAR Cup Series event for the first time on May 23, 2021. The lower Xfinity and Camping World Truck Series were also added as support events. On December 11th, 2020, it was announced that NASCAR would run the full 3.41 mile course.