Elevations are generally below 11,000'. Good health is necessary. Elevations up to 13,000' may be reached. Average fitness is required. Altitudes near 13,000' are common while elevations as high as 15,000' may be reached.
Good fitness is required.
Altitudes up to 15,000' are frequent in trekking programs with ascents to 20,000' possible. Requires very good fitness, stamina and some prior experience. A demanding, technical program that includes extensive outdoor activity. Requires excellent fitness and endurance plus previous experience and a degree of skill in the activity.