Packing for High Altitude Trekking in Peru
Pack using a three-layer system to handle rapid temperature shifts, and keep your total pack weight under 10 kilograms if you are carrying it yourself. Focus on merino wool base layers and a high-quality down jacket, as temperatures at altitude often drop below freezing even in the trekking season.
- Layering for microclimates. Bring a moisture-wicking base layer (merino wool is best), a fleece or down mid-layer for warmth, and a seam-sealed waterproof outer shell. You will be peeling these off and putting them on hourly.
- Protecting your feet. Break in your mid-weight waterproof hiking boots for at least 50 miles before arriving in Peru. Bring three pairs of thick, synthetic or wool hiking socks to rotate to prevent trench foot.
- Managing the sun and thin air. The sun is significantly stronger at 4,000+ meters. Pack a wide-brimmed hat, polarized sunglasses with high UV protection, and SPF 50 sunscreen. You need these even on cloudy days.
- Preparing for the cold at camp. Even if your tour company provides a sleeping bag, bring a silk or fleece sleeping bag liner. It adds 5 degrees of warmth and ensures a hygienic barrier between you and rental gear.
- Do I really need trekking poles?
- Yes. The descents on trails like the Salkantay or Inca Trail are brutal on your knees. Using poles helps with balance and prevents long-term joint pain.
- How much water should I carry?
- Carry at least 2 liters capacity. You must stay hydrated to combat altitude sickness, and you'll be drinking significantly more water than at sea level.
- Can I leave my big suitcase in Cusco?
- Almost all reputable trekking operators in Cusco provide secure luggage storage for your non-trekking items. Do not bring your large suitcase on the trail.