The grand duke's retirement allowed him to focus solely on his passion for horses. Dmitry Konstantinovich created a model equestrian center, the Dubrovsky Stud farm, outside the Village of Mirgord, in the Poltava province. In 1911, Dmitry became president of the Imperial Society of Horse Racing, and was named Honorary president of the Russian society of Care and Protection of Animals. In the autumn of 1913, he inaugurated the Russian Imperial Horse Exposition in Kiev, and the first Russian Sport Competition, a kind of Slavic Olympic Games.