Summit County is located among the high peaks of the Colorado Rockies, immediately west of the Continental Divide. The county’s elevation ranges from a low of 7,947 feet above sea level at Green Mountain Reservoir to a 14,270 feet at Gray’s Peak. The dry, high-alpine climate yields long, snowy winters that have attracted world-class ski resorts. Summit County has pleasantly warm summers that are ideal for hiking, biking, fishing, backpacking, kayaking and other forms of recreation. Summit County is centrally located in Colorado, only an hour’s drive from the Denver metropolitan area via Interstate 70, the state’s main east-west transportation corridor.
Summit County covers 619 square miles and makes up 9% of the region. Incorporated towns in Summit County: