Prairie Meadows Casino, Racetrack, & Hotel announces the release of Condition Book 1, which covers the first 18 racing days, May 1 – June 1, of the 2020 Mixed Thoroughbred and Quarter Horse racing season at Prairie Meadows. Thoroughbred racing will lead off the 84-day season from May 1 – June 8. Quarter Horse racing will join the daily program starting June 12 through the remainder of the season, which ends September 26.