Altitude Sickness: What It Is, Symptoms, Treatment
Altitude sickness is more likely when you ascend too far and too fast. A slower ascent is ideal for preventing altitude sickness. At 8,202 feet (2,500 meters), the recommendation is ascending no more than 984 feet (300 meters) to 1,640 feet (500 meters) per day. The starting altitude for the day is where you last slept.