Greenwood Roadway was an auto and motorcycle paved racetrack located in Otter Township, Warren County, 28 miles (45 km) south of Des Moines, Iowa, on Highway 65. It was only open from 1963 to 1966, but it managed to host several major auto racing events, including several Sports Car Club of America races and one round of the United States Road Racing Championship, the predecessor to the Can-Am series.