Cusco and Machu Picchu Travel Guide: Treks, Altitude, and Timing

Cusco and Machu Picchu reward planning more than most destinations on this site, mostly because of one factor that has nothing to do with scenery: altitude. Get the acclimatization and trek-booking timeline right, and the rest of the region — Inca ruins, the Sacred Valley, a genuinely good food scene — falls into place. This guide covers what actually matters, from permits to packing.

Best Time to Visit

May through September is the Andean dry season and the most reliable window for both trekking and clear views at Machu Picchu, with July and August as the genuine peak — the busiest crowds and the tightest permit availability. April, May, September, and October are the shoulder seasons worth prioritizing if you can: by April the heaviest rains have passed while the landscape is still lush and green, and May in particular tends to offer the most reliable weather of any non-peak month, with trail conditions firmly in dry-season territory by month's end.

The wet season runs roughly November through March, heaviest in January and February, and changes the experience rather than ruining it — expect afternoon showers more than all-day washouts, a noticeably greener landscape, thinner crowds, and easier, better-priced accommodation. The one hard constraint: the classic four-day Inca Trail closes entirely every February for trail maintenance, a planned annual closure. Alternative treks and the train route both continue operating through February, so Machu Picchu itself remains accessible — only the classic trail hike is unavailable that month.

Getting Around

Cusco's historic center is compact and walkable, with the Plaza de Armas, the cathedral, and San Pedro Market all in easy reach on foot; taxis are cheap and useful for the uphill approach to Sacsayhuaman. Getting to the Sacred Valley towns of Pisac and Ollantaytambo means colectivos (shared minivans, the budget option) or a private driver or organized tour for more flexibility. Reaching Machu Picchu itself requires a train — typically from Ollantaytambo (which cuts real time off the journey compared to departing from Cusco directly) or Poroy — to Aguas Calientes, followed by a shuttle bus or a steep walking trail up to the entrance. Self-driving is uncommon and not generally recommended given unfamiliar mountain roads and altitude effects on drivers.

Altitude and Acclimatization

Cusco sits at roughly 3,400 meters, high enough that altitude sickness — headache, nausea, fatigue, shortness of breath on mild exertion — is a genuine concern for most visitors arriving from sea level, regardless of fitness. Most travel health guidance suggests at least one to two full days at altitude before any strenuous activity, spent on gentle activity rather than bed rest: short walks around the city center, the cathedral, a museum. Stay well hydrated, skip alcohol the first night, and consider coca tea, a traditional local remedy widely available in the city. Some travelers spend their first night or two in the Sacred Valley, which sits meaningfully lower than Cusco, as a staged way to ease in. Symptoms that worsen rather than improve, or that include confusion or breathing difficulty at rest, warrant medical attention rather than home remedies.

If you're booked on a multi-day trek, arrive in Cusco at least two, ideally three, days before your start date. Rainbow Mountain (Vinicunca), sitting above 5,000 meters, is higher than most of the region's other major sights, and altitude — not distance — is what makes even its short trail genuinely hard; save it until you're already well acclimatized.

Getting to Machu Picchu: Trekking or Train

The classic four-day Inca Trail operates under a strict permit system, capping the total number of trekkers, guides, and porters allowed per day to manage erosion and crowding. It cannot be hiked independently — booking through a licensed tour operator is required, and the operator handles your permit application. For popular months, especially June through August, permits routinely sell out five to six months ahead, so this is the first thing to lock in if the classic trail specifically matters to you. Your permit is tied to your passport number, so bring the same passport you booked with.

If the classic trail is full, or simply not the trek you want, three established alternatives reach Machu Picchu by different routes: Salkantay is the most physically demanding, reaching a higher maximum altitude with dramatic high-mountain scenery and more last-minute flexibility since it isn't quota-limited; Lares is more culturally focused, passing through Andean villages and weaving communities with fewer crowds; Inca Jungle Trail is the most adventure-sport-oriented, combining biking, hiking, and sometimes rafting or zip-lining.

You don't need to trek at all — most visitors actually arrive by train, and it's a genuinely good option if you're short on time or simply prefer it. A single long day trip from Cusco is possible but makes for a full day of travel; staying a night in Aguas Calientes lets you enter earlier, with less rush and a buffer against delays. Whichever way you arrive, book your timed entry slot as early as your dates are confirmed — early-morning slots during peak season sell out ahead of time. Midday is the busiest entry window if avoiding crowds matters most to you; afternoon slots are calmer but carry a greater chance of cloud building.

Top Things to Do Around Cusco

Sacsayhuaman, a 20-minute walk from the main square, is an enormous Inca fortress complex with massive stone blocks fitted without mortar — it deserves more time than most tour buses give it, and nearby sites Qenqo, Puka Pukara, and Tambomachay combine easily into the same half-day.

The Sacred Valley towns of Pisac (known for both its market and hillside ruins with terracing that sees far fewer visitors than Machu Picchu despite being genuinely impressive) and Ollantaytambo (a living town still on its original Inca street grid, with a fortress that saw one of the few Inca military victories against the Spanish) are worth a dedicated day, and Ollantaytambo doubles as the jumping-off point for the train to Aguas Calientes. Maras and Moray combine the hand-worked Maras salt pans with Moray's concentric agricultural terraces in a single half-day loop, and Humantay Lake, a turquoise glacial lake at 4,200 meters, is a popular, steep-but-short hike once you're properly acclimatized.

Suggested Itinerary

For a full day-by-day city plan, see our 3 Days in Cusco itinerary. As a general shape for the wider region: a train-only visit can realistically fit into two to three days (acclimatization, the Machu Picchu round trip, and a buffer day), four to five days allows real acclimatization plus a Sacred Valley day trip, and a trek-based trip needs at least six to seven days total — two to three for acclimatization, four for the trek itself, and ideally a rest day before flying onward.

Food

San Pedro Market, a few blocks from the Plaza de Armas, is as much a place to eat as to shop, with stalls serving breakfast and lunch to locals throughout the day at a fraction of restaurant prices. Around the Plaza de Armas, Novo Andino restaurants reinterpret traditional ingredients — quinoa, native potatoes, alpaca — with more contemporary technique. Cuy (guinea pig) is a traditional Andean dish worth approaching with curiosity if you're open to it, and the pisco sour and chicha (a fermented corn drink) are both worth trying at least once. Menu del día lunch specials at local restaurants are the reliable way to eat well without tourist pricing.

Budget

Accommodation ranges from plentiful, inexpensive hostels and budget guesthouses in Cusco to mid-range and high-end hotels in converted colonial buildings; Aguas Calientes, given its captive location, tends to run pricier than equivalent Cusco lodging. Train tickets vary considerably by service class — choosing standard over premium is one of the single biggest cost levers for a train-based visit. Trekking involves a fixed package cost through a licensed operator instead. The Boleto Turístico, a multi-site ticket covering several Cusco-area attractions together, is generally better value than paying for each site individually if you plan to see multiple. Don't cut corners on a licensed guide for any trek or on travel insurance covering high-altitude activity.

What to Pack

A proper rain jacket (not just a light shell) is worth having regardless of season, since Machu Picchu's cloud forest setting means rain is possible even outside the wet season. Pack real layers — mornings can be cool and afternoons warm, especially moving between Cusco's higher altitude and Machu Picchu's lower, more humid setting — plus sun protection (high-altitude sun is stronger than the temperature suggests), comfortable broken-in footwear for the uneven stone terracing at the site, and insect repellent for Aguas Calientes and the surrounding cloud forest. Bring your passport; it's required for entry and checked against your ticket.

Common Mistakes to Avoid

Not budgeting acclimatization time is the single most common mistake, given the city's altitude. Booking the Inca Trail too late is the second — deciding a few weeks before your trip is a reliable way to be disappointed, given permits sell out months ahead in peak season. Drinking alcohol the first night, underestimating how demanding Rainbow Mountain's altitude makes it, not carrying enough cash for smaller vendors and rural markets, and packing only for warm days while getting caught out by genuinely cold Andean nights round out the list. Rushing the region tends to mean rushing acclimatization too, which compounds problems rather than saving time.