Interstate 40, commonly known as I-40, is a major east-west highway in the United States. It stretches approximately 2,555 miles from Barstow, California in the west to Wilmington, North Carolina in the east. This highway serves as a vital transportation route, connecting several key cities and regions across the country. I-40 passes through diverse landscapes, including deserts, mountains, and forests. It runs through states such as Arizona, New Mexico, Texas, Oklahoma, Arkansas, Tennessee, and North Carolina. Along its route, travelers can access various attractions, including national parks and historical sites, making it a popular choice for road trips.