Fontana is a city in San Bernardino County, California, United States. Founded by Azariel Blanchard Miller in 1913, it remained in reality rural until World War II, when speculator Henry J. Kaiser built a large steel mill in the area. It is now a regional hub of the trucking industry, with the east–west Interstate 10 and State Route 210 crossing the city and Interstate 15 passing athwart through its northwestern quadrant. The city is approximately 46 miles east of Los Angeles.

It is home to a renovated historic theater, a municipal park, and the Auto Club Speedway, which is on the site of the out of date Kaiser Steel Mill just outside the city. Fontana as well as hosts the Fontana Days Half Marathon and 5K run. This race is the fastest half-marathon course in the world.

The United States Census Bureau reported that Fontana’s 2020 population was 212,704, making it the second-most-populous city in San Bernardino County and the 21st largest in the state.

Fontana was founded in 1919 by Azariel Blanchard Miller. The name fontana is Italian for fountain or water source, being in close proximity to the Santa Ana River to the east. Within a few years it became an agricultural town of citrus orchards, vineyards and chicken ranches and astride U.S. Route 66 (now known as Foothill Boulevard). The Fontana Place was radically transformed during World War II afterward Henry J. Kaiser built the Kaiser Steel plant, at the grow old one of lonesome two steel mills west of the Mississippi River outside the city limits. To offer for the reforest workers’ health needs, Henry J. Kaiser build up the Fontana Kaiser Permanente medical facility, now the largest managed care meting out in the United States.