Continental Divide Raceways was a 2.8 mile road course near Castle Rock, Colorado. The complex included a 1/2 mile oval track and a drag strip.
CDR opened in 1959, and was still in use in the mid-1960s. We do not know when it passed out of service. It was later reopened (maybe in the mid-1970s) and ran several years before closing again in the 1980s.