Interstate 210, also known as the Foothill Freeway, is a major highway in Southern California. It runs approximately 66 miles, connecting Interstate 5 in the west to Interstate 10 in the east. The freeway primarily serves the San Gabriel Valley and provides access to various cities, including Pasadena and Arcadia. Constructed in segments, Interstate 210 was completed in the late 1990s. It features multiple interchanges and connects with several other highways, facilitating travel across the region. The freeway is known for its scenic views of the San Gabriel Mountains and is an essential route for commuters and travelers alike.