What is the safe daily rate of ascent at altitude ?

No rate is safe for all. Published itineraries for groups going to high altitude on commercial to private trips will be too fast for perhaps 10 to 20 percent of the participants. Not raising the sleeping altitude more than 1000 feet (300 meters) a day above 10,000 feet (3050 meters) is offered as a safe rate of ascent if a stopover day is thrown in every 2000 or 3000 feet (610 or 910 meters). On the stopover day climb as high as you like but return to the previous night’s altitude to sleep. Some people will find this too fast, so if they get AMS, they should slow down.

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