Research
Articles
Evidence-based research on Cusco & Inca Trail trekking. Every claim sourced.
Four routes to Machu Picchu, four different realities — and the altitude trap that ruins 30% of first days
500 permits per day on the Inca Trail. No cap on the Salkantay. Choquequirao receiving 30 visitors while Machu Picchu processes 5,600. And 40-50% of travelers hitting Cusco at 3,399m from sea level with no acclimatization plan. Four routes, four cost structures, four completely different experiences — and the single biggest variable is not the trail but how your body handles the first 48 hours.
The Classic Inca Trail — 43 km, Dead Woman's Pass, and the 500-person daily cap
The most regulated trek in South America. 500 people per day, permits linked to your passport, and as of 2026, a separate Machu Picchu ticket you must also secure. This is the day-by-day breakdown of what the 43 km actually involve, what the permit tiers cost, and what changed this year.
Getting to Cusco and Machu Picchu — the flight, the train duopoly, and the $15 backdoor
Lima to Cusco in 75 minutes for $25-150. Cusco to Aguas Calientes by train for $80-600 roundtrip, controlled by two companies. Or the Hidroeléctrica backdoor for $15-25 if you have an extra day and tolerance for walking along railway tracks. This is the transport infrastructure that determines what Machu Picchu costs.
When to trek to Machu Picchu — dry season, February closure, and the altitude acclimatization window
Dry season runs May through September. The Inca Trail closes every February. 40-50% of travelers experience altitude sickness on arrival in Cusco. The timing decision is not just about weather — it is about permit availability, crowd density, and the 2-3 acclimatization days your body needs before any pass above 4,000m.
Choquequirao — the other Inca city, 30% excavated, and the cable car that hasn't been built
Three times the size of Machu Picchu. 30-40% excavated. Fewer than 30 visitors per day. Accessible only by a multi-day trek through the deepest canyon in the Cusco region. A cable car project has been 'about to start' for a decade. The window to experience Choquequirao as a wilderness pilgrimage rather than a day-trip destination is finite.
Machu Picchu in 2026 — 10 circuits, timed entry, and the bus vs walk decision
5,600 visitors per day in peak season, split across 3 circuits with 10 route variants, 9 timed entry slots, and a 4-hour maximum stay. Huayna Picchu closed all of June 2026. The Consettur bus monopoly charges $35 roundtrip; walking takes 2 hours. This is how the access system actually works.
Salkantay Trek — no permit cap, better scenery variety, and half the Inca Trail price
74 km in 5 days, from glacial passes at 4,630m to subtropical orchid forest at 1,500m. No daily cap. No permit lottery. Half the price of the Inca Trail. The Salkantay is objectively the stronger trek for ecological diversity and the weaker one for Inca ruins and the Sun Gate arrival. Here is what the route actually involves.