Chula Vista is a city in San Diego County, California, United States. It is also the second-largest city in the San Diego metropolitan area, the seventh largest city in Southern California, the fifteenth largest city in the state of California, and the 78th-largest city in the United States. The population was 275,487 as of the 2020 census, up from 243,916 as of the 2010 census. Located about halfway—7.5 miles (12.1 km)—between the two downtowns of San Diego and Tijuana in the South Bay, the city is at the center of one of the richest culturally diverse zones in the United States. Chula Vista is so named because of its scenic location between the San Diego Bay and coastal mountain foothills.

The United States Olympic & Paralympic Training Centers (OPTCs) are two campuses created by the United States Olympic & Paralympic Committee (USOPC) as training facilities for its Olympic and Paralympic athletes. They are located in Colorado Springs, Colorado and Lake Placid, New York. Formerly, the USOPC also had a third OPTC in Chula Vista, California, which is now the city-owned Chula Vista Elite Athlete Training Center. There is a U.S. Olympic Education Center in Marquette, Michigan, and other official U.S. Olympic/Paralympic training sites are located in Oklahoma City and Edmond, Oklahoma; Carson, California; Lakeshore Foundation in Birmingham, Alabama; Charlotte, North Carolina; the Pettit National Ice Center in West Allis, Wisconsin; a USRowing training center in Oakland, California ; Huntsville, Texas and the SPIRE Institute and Academy near Geneva, Ohio.