LEVEL OF PHYSICAL DIFFICULTY Our trips are graded as to level of difficulty from 1 - 5, with 5 being the highest level of difficulty. The two Peruvian tours include some moderate hiking in high altitudes so we give this a grade of 3 out of 5. A reasonable level of fitness is suggested for these particular trips. Please note that alcohol has been known to exacerbate problems with altitude sickness. Please scroll down to read about our trusted partner and how we operate.