A racetrack is a special path or circuit where races, particularly horse races or car races, are held. It's like a track or course where these competitions take place. Full definition
Scientists spot ice shoving rocks on Racetrack Playa in California, resolving a longstanding geological enigma (scientificamerican.com)
Following the 2004 outbreak, the extent of respiratory infections in Greyhounds was established by two lines of evidence: 11,14 Respiratory disease outbreaks occurred during 2004 and 2005 at racetracks in at least 13 states, representing over 20,000 dogs. (dogflu.com)
Because of their tremendous speed, greyhound racing is a popular spectator sport, drawing large crowds at racetracks around the country. (animals.howstuffworks.com)