How to pack trekking gear for South America

Pack for extreme temperature swings and altitude changes with layerable clothing, waterproof gear, and broken-in hiking boots. Focus on lightweight, multi-use items since you'll carry everything. Altitude sickness medication and water purification are essential.

  1. Choose your base pack size. Get a 65-75L backpack for multi-day treks. 45-55L works for day hikes with hostel base camps. Test the pack loaded with 20-25 pounds before you go.
  2. Pack the layering system. Bring moisture-wicking base layers, insulating mid-layers (fleece or down), and waterproof outer shell. You'll go from 90°F valleys to 20°F peaks in the same day.
  3. Select altitude-rated sleeping gear. Pack a sleeping bag rated to 10°F below expected low temperatures. Add a closed-cell foam pad under your inflatable pad for insulation from cold ground.
  4. Waterproof everything critical. Use dry bags for electronics, extra clothes, and sleeping gear. Pack liners stay drier than pack covers in heavy rain.
  5. Add altitude and water safety. Bring altitude sickness medication (acetazolamide), water purification tablets or UV sterilizer, and electrolyte supplements for the thinner air.
Can I buy gear locally instead of packing it?
Gateway cities like Cusco, La Paz, and Quito have good gear shops and rental places. Quality varies but prices are lower than home. Rent heavy items like tents, buy consumables like batteries locally.
How much should my pack weigh?
Keep base weight under 20% of your body weight. At altitude, even fit hikers struggle with heavy packs. Aim for 35-45 pounds total including water and food.
What about electronics and charging?
Bring a solar charger or power bank rated for 5+ full phone charges. Many refugios have charging but it's expensive. Keep everything in waterproof cases.
Do I need special permits for gear?
No permits needed for personal trekking gear. Some areas restrict group camping equipment. Satellite communicators and GPS devices are fine everywhere.