racetrack
n.a special path or track where people race cars, horses, or bikes. It is usually a closed loop with a smooth surface for high speeds.
n.a prepared course or circuit designed for racing competitions between vehicles, animals, or athletes. Often circular or oval in shape and featuring specialized surfaces like asphalt or turf.
“The cars sped around the racetrack at high speeds.”
“The local government invested in a new racetrack to attract international motor racing events to the region.”
“Engineers designed the racetrack with banked curves to allow drivers to maintain maximum velocity without losing traction during the most demanding segments of the circuit.”
Commonly used as a single word in American English, while 'racecourse' is more frequent in British English for horse racing.
From race + track.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.