The 24. edizione Mille Miglia was an auto race held on a course totalling 992.332 miles (1,597.004 km), made up entirely of public roads around Italy, mostly on the outer parts of the country on 11–12 May 1957. The route was based on a round trip between Brescia and Rome, with start/finish, in Brescia. It was the 3rd round of the 1957 World Sportscar Championship season.