La Manga Pass is a high mountain pass at an elevation of 3.124m (10,249ft) above the sea level, located in Conejos County, in the U.S. state of Colorado.
Nestled in the San Juan Mountains of Colorado, within the Rio Grande National Forest, the road to the summit is paved. It’s called State Highway 17 (SH 17). The pass is 75.80km (47.1 miles) long running from the town of Antonito (in Conejos County, Colorado) towards Chama (in Rio Arriba County, New Mexico).
Open to traffic throughout the year, may be closed for short periods in winter when the weather is bad. It suffers the harsh meteorological conditions of the area every winter. The road is pretty steep: an average gradient of 5.5%, with some sections up to 12.76%.