State Route 8 (SR 8) is a major east-west highway in California, stretching approximately 120 miles. It begins at the California-Mexico border near San Diego and travels through various landscapes, including deserts and mountains, before reaching its eastern terminus at State Route 10 in El Centro. The route serves as a vital connection for travelers and commerce, linking San Diego to the Imperial Valley. Along the way, it passes through several communities and offers access to recreational areas, making it an important thoroughfare for both residents and visitors in the region.