The Mil Milhas Brasil (also known as the Mil Milhas Brasileiras or 1000 Miles of Brazil in Portuguese) is a sports car endurance race held annually in Brazil since 1956.

The Mil Milhas has been held nearly every year since its inception and is one of the longest running motor racing events in Brazil. Nearly every running has used the Interlagos circuit, but the 1997 and 1999 events were held at Brasília and Curitiba respectively.

Zeca Giaffone holds the record of most wins, having won in 1981, 1984, 1986, 1988 and 1989.

The first Mil Milhas was organized by Eloy Gogliano and Wilson Fittipaldi Sr., the father of racing drivers Emerson Fittipaldi and Wilson Fittipaldi Júnior. Fittipaldi and Gogliano were inspired to found the race after seeing the 1949 Italian Mille Miglia. The first event was held on November 24–25, 1956, with 31 cars competing at the Interlagos circuit.

The race was held at Interlagos from 1956 to 1996. It was held at Brasília in 1997, before returning to Interlagos the following year. The race was held in Curitiba in 1999. It returned to Interlagos in 2001, and has been held there ever since.

In 2007, the race was held as a part of the Le Mans Series, the first time the race had been part of an international championship. The event had previously been supported as a non-championship event in the BPR Global GT Series as well as the FIA GT Championship. FIA GT planned to add the event to their calendar in 2007, but chose to hand the event instead to Le Mans Series organizers.