New York State Route 20 is a major east-west highway in the state of New York. It stretches approximately 90 miles, connecting the cities of Albany and Erie. The route passes through various towns and scenic areas, making it an important thoroughfare for both local and through traffic. The highway is known for its historical significance, as it follows part of the path of the old Seneca Turnpike. It serves as a vital link for travelers and commerce, providing access to several attractions, parks, and communities along its route.