Horses for Sale in Colorado listing of horses for sale in Colorado. From the Western Slope to the Eastern Plains, has the most horses for sale in CO. Colorado is home to the National Western Stock Show and Rodeo and the Rocky Mountain Horse Expo and Colorado State University in Fort Collins has one of the nation's leading Equine Science programs. From Loveland to Pueblo, Greeley to Grand Junction find the most horses for sale in Colo., on

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