San Pedro de la Paz is a Chilean city and commune located in the Concepción Province, Biobío Region. It has some 80,447 inhabitants according to the 2002 national census. In 2005, the Pedro Aguirre Cerda avenue, the main avenue in the city, was completed. Most of the inhabitants of this comuna commute daily to Concepción – either by car, bus or train – over the Biobío River. It is considered to be part of Greater Concepción conurbation.

The Biobío River is the second largest river in Chile. It originates from Icalma and Galletué lakes in the Andes and flows 380 km to the Gulf of Arauco on the Pacific Ocean.