The elevation of Breckenridge, Colorado is 9,600 feet (2,900 meters) above sea level. The Breckenridge Ski Resorts summit elevation reaches 12,998 feet, which is significantly higher than most places in the U.S. The air is even thinner at the top of the mountain, where visitors may find themselves gasping for air. Visitors from lower altitudes may experience some form of altitude sickness, also known as acute mountain sickness, due to the high altitude. Most people find the effects of Breckenridges altitude to be relatively mild, initially noticing a slight shortness of breath or finding it difficult to sleep soundly for the first night or two after their arrival. These symptoms are often naturally resolved as the body acclimates to its new surroundings, though they should be monitored to ensure symptoms do not worsen.