The first auto race in the United States took place on Thanksgiving Day in 1895 in Chicago. Six cars raced for over 10 hours on a 54 mile course, averaging less than 10 miles per hour. Auto racing gained popularity in the early 20th century, with dirt track racing becoming widespread in the 1920s and 1930s. Major auto racing organizations like NASCAR and NHRA were founded from the 1940s onward, shaping the growth of American stock car racing and establishing Thanksgiving as a traditional time not just for food and football, but also the roots of auto racing in the U.S.