Within this range, there are 25 peaks above 6,000 meters, 15 of which are above 20,000 ft (6,096 m). The highest mountain in the range is Nevado Huascaran, at 22,205 ft (6,768 m), the tallest in Peru and the 4 highest in South America. The range is 180 kilometers long and 20 kilometers wide, and runs roughly parallel to the Pacific coastline.

The main climbing season is May to early September during Peru's dry season and winter.

Found this real nice trip report: 6 weeks in Cordillera Blanca and Huayhuash (LOTS of pictures)