Western Avenue is a major four-lane street in the city of Los Angeles and through the center portion of Los Angeles County, California. It is one of the longest north–south streets in Los Angeles city and county, apart from Sepulveda Boulevard. It is about 29 miles (47 km) long.

Sepulveda Boulevard is a major street and transportation corridor in the City of Los Angeles and several other cities in western Los Angeles County, California. The street parallels Interstate 405 for much of its route. Portions of Sepulveda Boulevard between Manhattan Beach and Los Angeles International Airport (LAX) are designated as part of State Route 1.