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The Pikes Peak Highway is a 19-mile (31 km) toll road that runs from Cascade, Colorado to the summit of Pikes Peak in El Paso County, at an altitude of 14,115 feet (4,302 m). It is at least partially open year-round, "weather permitting", i.e. open up to the altitude where snow removal becomes excessively difficult.
An earlier road up the mountain, the Pike's Peak Carriage Road, dates back to 1888. Thousands of tourists traveled along the Pikes Peak Carriage Road up to Pikes Peak's summit. It was opened by the Cascade Town Company in 1888 and closed in 1902.
Today, the road is maintained by the city of Colorado Springs.
Another race is the Pikes Peak Cycling Hill Climb.
Litigation was pursued by the Sierra Club in 1998-1999, on grounds of environmental damage from the gravel portion of the road. The environmental damage was caused primarily by the 150,000,000 pounds (68,038,856 kg) of gravel that washes away annually. The same amount needed to be hauled up the mountain each year in order to maintain the road surface. Environmental damage includes alpine ponds and wetlands becoming filled with gravel, and layers of gravel averaging 2 feet (0.6 m) to 4 feet (1.2 m) feet deep covering the forest floor below. Pursuant to the settlement agreed by the Sierra Club and the City of Colorado Springs, the unpaved portion of the Pikes Peak Highway became a hard-surface road, despite concerns that such a project would radically change the nature of the annual automobile and motorcycle race. The paving project was completed on October 1, 2011.