Mt. Massive is the second highest mountain peak in Colorado and the third highest in 48 states; exceeded only by California's Mt. Whitney and its near neighbor, Mt. Elbert. It's name tells all. It has five summits above 14,000 feet on a 3-mile-long ridge. Massive has more area above 14,000 feet than any other mountain in 48 states, narrowly edging Mt. Rainier in that category. The mountain, along with Mt. Elbert, forms much of the western skyline of Leadville, CO.