"At an altitude of 14,110 feet above sea level, Pikes Peak is the 31st highest peak out of 54 Colorado peaks. It is the farthest east of the big peaks in the Rocky Mountain chain, which contributed to its early fame among explorers, pioneers and immigrants and made it the symbol of the 1859 Gold Rush to Colorado with the slogan, "Pikes Peak or Bust". Over a half million people reach the summit house every year by the Pikes Peak Highway, Barr Trail or the Pikes Peak Cog Railway. The 19-mile Pikes Peak Highway, paved part of the way, is open year round, weather permitting. Barr Trail is the longest of any trails leading to the top of the 54 mountains in Colorado that are over 14,000 feet, and offers the greatest base-to-summit elevation gain in the state: 7,400 feet. About 15,000 people a year attempt to climb Pikes Peak on foot. The 13-mile trail begins at the base of Pikes Peak in Manitou Springs. The 8.9 mile cog railroad typically operates April through December."