Route 391 is a state highway located in the northeastern United States, specifically in the state of Massachusetts. It spans approximately 12 miles, connecting the towns of Chicopee and Westfield. The route primarily serves as a vital link for local traffic and provides access to various residential and commercial areas. The highway is known for its scenic views and is often used by commuters traveling to nearby cities. It intersects with several major roads, enhancing connectivity within the region. Route 391 plays an essential role in facilitating transportation and supporting the local economy.