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If you’re planning a trip through Peru or Bolivia, you’ve probably already heard about one of the biggest challenges: high altitude . Many of the countries’ most famous attractions sit far above sea level, and if you don’t prepare or manage it properly, altitude sickness ( soroche , as locals call it) can easily sneak up on you and ruin your plans. The Andes run like a backbone down the length of both Peru and Bolivia, with much of the land sitting at 3,000 meters or higher.

So, you’re going to Peru. That’s fantastic! Peru has it all: ancient history, vibrant culture, world-class food, and some of the most...