The famous Calistoga Speedway is located at the northern end of the Napa Valley, in the town of Calistoga, on the Napa County Fairgrounds. Calistoga Speedway is not only a picturesque dirt track, it is one of the oldest, continuously operated racetracks in the nation. The half-mile oval known as the Calistoga Speedway is fondly referred to as the fastest dirt track in the western United States!