Rockingham Park is a 1-mile (1.6 km) horse racing establishment in Salem, New Hampshire, in the United States. First built in 1906, it was used as an area for many to gamble on the weekends. Seabiscuit raced there in 1935 and 1936, and Mom's Command ran in her first race and gained her first victory there in 1984. Rockingham Park now only hosts simulcasting.