Interstate 15, often abbreviated as I-15, is a major north-south highway in the United States. It stretches approximately 1,433 miles from the Canadian border in Montana to the Mexican border in California. The highway passes through several states, including Idaho, Utah, Nevada, and Arizona, connecting key cities and regions along the way. I-15 serves as a vital transportation route for both commercial and personal travel. It facilitates the movement of goods and people, linking urban centers like Las Vegas and Los Angeles. The highway also offers scenic views, particularly in areas like Zion National Park in Utah.