The following sortable table lists the 104 mountain peaks of the United States with at least 4000 meters (13,123 feet) of topographic elevation and at least 500 meters (1640 feet) of topographic prominence. Topographic elevation is the vertical distance above the reference geoid, a precise mathematical model of the Earth's sea level as an equipotential gravitational surface. Topographic prominence is the elevation difference between the summit and the highest or key col to a higher summit. Topographic isolation is defined as the minimum great circle distance to a point of higher elevation. Of these 104 highest major summits, 55 are located in Colorado, 23 in Alaska, 16 in California, 5 in Wyoming, 2 in Hawai i, and 1 each in Washington, Utah, and New Mexico. Six of these summits lie on the international border between the United States and Canada: five between Alaska and the Yukon and one between Alaska and British Columbia.