Do I need special boots for high altitude?

Only if you're mountaineering above 14,000 feet or walking on snow/ice. Regular hiking boots work fine for most high altitude destinations like Cusco, La Paz, or Lhasa.

Should I buy everything before I go?

No. Many high altitude destinations have excellent outdoor gear shops with rental options. Buy base layers, sun protection, and medication at home. Consider renting or buying bulky items like down jackets locally.

How much warmer clothing do I actually need?

Temperature drops about 3.5°F per 1,000 feet of elevation gain. If it's 70°F at sea level, expect 35-40°F at 10,000 feet. Pack as if you're visiting somewhere 30-40 degrees colder than your departure city.

What if I get altitude sickness despite packing well?

Proper packing prevents discomfort but not altitude sickness itself. The only cure is descending to lower elevation. Pack conservatively and plan rest days for acclimatization.

How to pack for high altitude destinations

Pack layers for dramatic temperature swings, sun protection for intense UV exposure, and hydration supplies. Bring items you already own rather than buying everything new—altitude affects your body more than your gear needs.

Plan your clothing system around layers. Pack a base layer (merino wool or synthetic), insulating layer (fleece or down), and waterproof shell. Temperature can drop 30-40°F from day to night above 8,000 feet. Avoid cotton—it kills when wet and takes forever to dry.
Prioritize sun protection. UV radiation increases 4% for every 1,000 feet of elevation. Pack SPF 30+ sunscreen, quality sunglasses with UV protection, and a wide-brimmed hat or cap with neck coverage. Lip balm with SPF prevents painful cracking.
Bring extra water capacity. Your water needs double at altitude—plan for 3-4 liters per day versus 1.5-2 liters at sea level. Pack an extra water bottle or hydration bladder. Water purification tablets or a filter if you're refilling from natural sources.
Pack for dry air and wind. High altitude air has 50% less humidity than sea level. Bring heavy-duty moisturizer, nasal saline spray, and eye drops. A buff or bandana protects your neck and can cover your mouth while sleeping to retain moisture.
Include altitude-specific medication. Pack ibuprofen or acetaminophen for headaches, and consider bringing diamox (acetazolamide) if prescribed by your doctor. Electrolyte packets help with hydration. A pulse oximeter lets you monitor oxygen levels if you're concerned.

Do I need special boots for high altitude?: Only if you're mountaineering above 14,000 feet or walking on snow/ice. Regular hiking boots work fine for most high altitude destinations like Cusco, La Paz, or Lhasa.
Should I buy everything before I go?: No. Many high altitude destinations have excellent outdoor gear shops with rental options. Buy base layers, sun protection, and medication at home. Consider renting or buying bulky items like down jackets locally.
How much warmer clothing do I actually need?: Temperature drops about 3.5°F per 1,000 feet of elevation gain. If it's 70°F at sea level, expect 35-40°F at 10,000 feet. Pack as if you're visiting somewhere 30-40 degrees colder than your departure city.
What if I get altitude sickness despite packing well?: Proper packing prevents discomfort but not altitude sickness itself. The only cure is descending to lower elevation. Pack conservatively and plan rest days for acclimatization.