California State Highway 210, also known as the Foothill Freeway, is a route that runs roughly East-West from Sylmar in the West to San Bernardino in the East.

The 210 has three main secions:

• The Northwest-Southeast section which begins at its intersection with U.S. Highway 5 (near the 118, 14, and 405 freeways) in Sylmar and leads along the foothills of the Angeles National Forest until it meets the Ventura Freeway in Pasadena
• The East-West section, that continues the Eastern path of the Ventura Freeway, out into the "Inland Empire" where a recently completed extention connects it to the 15 Freeway, a critical artery for traffic headed towards Nevada.