canal - long and narrow strip of water made for boats or for irrigation

cinder track - a racetrack paved with fine cinders

course - facility consisting of a circumscribed area of land or water laid out for a sport; "the course had only nine holes"; "the course was less than a mile"

dirt track - a racetrack that is not paved

racing circuit, circuit - a racetrack for automobile races

speedway - a racetrack for racing automobiles or motorcycles

stretch - a straightaway section of a racetrack

inside track - the inner side of a curved racecourse