Interlagos is a neighborhood located in the district of Socorro in the city of São Paulo, Brazil. Its name comes from the fact that the region is located between two large reservoirs, Guarapiranga and Billings, built in the early 20th century to supply water and electric power to the city. The suburb of Interlagos is located in the south region of São Paulo City on the eas…Interlagos is a neighborhood located in the district of Socorro in the city of São Paulo, Brazil. Its name comes from the fact that the region is located between two large reservoirs, Guarapiranga and Billings, built in the early 20th century to supply water and electric power to the city. The suburb of Interlagos is located in the south region of São Paulo City on the east bank of the Guarapiranga reservoir.