Inca Trail Success Guide: The Hardest Trek to Book, Easiest to Underestimate

The Inca Trail is the hardest trek in Peru to get a spot on, and one of the easiest to show up undertrained for.

Trekkers book months ahead for permits that sell out within days for the peak months, then fly across the world to walk it. What they’ve booked is roughly 42 km (26 miles) of stone staircases, a high point of 4,215 meters (13,829 feet), and four straight days of climbing and descending at altitude.

The scarcity creates a false sense of safety. If a couple of hundred trekkers walk it every day, how hard can it be? So the effort goes into the booking, and Inca Trail preparation gets whatever time is left.

We walked it ourselves, and we’ve trained plenty of people heading there. This guide covers the permit, the steps, the altitude, and the training that makes the four days enjoyable.

Inca Trail permits: how they work and when to book

The first obstacle is getting permission to be there.

Peru’s Ministry of Culture issues 500 permits a day, and that number covers everyone on the trail: the guides, the porters, the cooks. Roughly 200 are left for trekkers. Each permit is tied to a passport, can’t be transferred, and is sold only through a licensed operator. You can’t walk the trail independently.

Permits for the following year go on sale months ahead. Sales for 2026 opened on October 27, 2025. For June through August, dates can sell out within days or weeks. Shoulder months hold on longer. The trail closes every February for maintenance, so that month isn’t an option at all.

“Sold out” doesn’t mean 200 individual hikers were quicker than you on the day. Operators submit their clients’ passport details the moment sales open, so anyone who reserved a tour months earlier is already at the front of the line.

It isn’t always a race a year out, though. We booked ours in mid June for a late September trek, which is shoulder season, and a window of a few months worked fine. If your dates are flexible, you have more room than the horror stories suggest.

You’ll also meet people in Cusco hoping for a last minute spot. We did. In the quieter months there can be unsold permits close to the date, but a cancelled permit can’t be passed on to someone else, so in peak season it’s a gamble. Flying to Peru and hoping is a risky way to plan a trek you care about. Book ahead.

Picking your month

The dry season runs from May to September, with the clearest skies, the coldest nights and the heaviest demand for permits. November to March is the wet season, when the stone steps are slick and the views often sit in cloud. April, October and late September fall in between, with fewer people and some rain.

Permit rules, prices and operator policies in Peru change regularly. Treat the practical details here as a guide and confirm the current specifics when you book.

How hard is the Inca Trail?

Operators commonly rate the Inca Trail “easy to moderate.” Read cold, that sounds like basic fitness is enough. Four days at around 10 km a day looks like a string of day hikes.

The rating leaves out three things: the steps, the altitude, and the near total absence of flat ground.

What the four days look like

Day	Route	Distance	What it involves
1	Km 82 to Wayllabamba	about 12 km	A warm valley walk that climbs from 2,700 m to about 3,000 m
2	Wayllabamba to Pacaymayo	about 11 km	Around 1,200 m up to Dead Woman’s Pass at 4,215 m, then 600 m straight back down
3	Pacaymayo to Wiñay Wayna	about 15 km	Two more passes, both above 3,600 m, then roughly 1,000 m of stone steps down
4	Wiñay Wayna to Machu Picchu	about 5 km	A wake up around 3 am, the Sun Gate, and the walk down into the site

Camps and daily distances vary by operator, so treat these as typical figures.

The surface matters as much as the numbers. The trail is thousands of uneven stone steps linking the ruins. The risers are different heights, the treads tilt, and there is no rhythm to settle into the way there is on a gym stair climber.

Why the descents hurt more than the climbs

Going down, your quads, glutes and calves work eccentrically. They lengthen under load to brake each step. Repeat that a few thousand times and untrained legs are limping by day three.

We felt this firsthand. Going in, we thought Dead Woman’s Pass was the hard part. Then we topped out, turned around and started straight down the far side, and that descent was what tested our knees. It’s the reason we treat downhill strength as its own block of training.

The rating also says nothing about how rough the steps are. This is irregular stone for four days, and ankles roll more easily once the lower leg is tired.

Treadmill walking and flat trail miles don’t prepare you for that. Stairs, step-downs and hills do.

Altitude on the Inca Trail and how to acclimatize

The distance is modest. The altitude is what makes a modest distance slow.

You start at Km 82 at about 2,700 meters (8,860 feet) and cross Dead Woman’s Pass at 4,215 meters (13,829 feet) on day two. From the first camp until the long descent on day three, you are walking and sleeping at or above 3,000 meters (9,800 feet). Machu Picchu, at about 2,430 meters (7,970 feet), is lower than every camp on the way to it.

That means two nights of sleeping high, each followed by a full day of work.

At the top of the pass, each breath carries roughly 40% less oxygen than at sea level. Your heart rate runs higher for the same pace, and recovery between efforts slows down.

Fitness doesn’t protect you from altitude sickness. The CDC’s guidance on altitude illness says the same. What training gives you is reserves, so each day costs you less and you have more left for the next one. The trap is pace. Fit trekkers can set a speed on day one that their body can’t back up at 3,000 meters. Train hard at home, then walk slower than feels necessary on the trail.

What altitude sickness feels like

Mild altitude sickness feels like a hangover: headache, nausea, poor appetite, unusual tiredness and broken sleep. The first place to watch for it is Cusco, since you fly in from much lower. The second is the night after Dead Woman’s Pass, when you sleep at around 3,600 meters (11,800 feet).

Tell your guide as soon as symptoms start. A headache that eases with water, food and rest is common. Symptoms that keep getting worse, trouble walking a straight line, or breathlessness at rest mean going down, and your guide makes that call.

Acclimatize in Cusco first

We spent about three days in Cusco before starting, and we’re glad we did. Cusco sits at about 3,400 meters (11,150 feet), higher than the trailhead and higher than Machu Picchu, and we felt it the moment we landed. One flight of stairs to the second floor of our hotel left us puffing.

That passed within a day or so, which is the reason to arrive early. Spend those days on light activity: easy walks around town, a day in the Sacred Valley. Skip the alcohol and the hard efforts while you settle in.

What Dead Woman’s Pass felt like

It’s long, and it feels long. Several times we thought we could see the top and couldn’t.

The altitude didn’t hit us in the dramatic way people describe. We moved slower, and some of that was simply hours of uphill. Cresting it and looking all the way back down to where we’d started that morning was one of the best moments of the trek.

How to train for the Inca Trail

Take the rating at face value and it’s easy to arrive with a few gym sessions and some weekend walks behind you. Four things carry over.

• Aerobic base. The trail is steady effort for hours, with no sprints. Long sessions at conversational pace do more for you here than high intensity intervals. Build up to moving for four to six hours, and train on back to back days so the second and third mornings aren’t a shock.
• Stair strength. You need step-up endurance for the climbs and eccentric strength for controlled descents. Single leg work, lunges, weighted step-ups and slow step-downs carry over directly.
• Ankles and calves. Calf raises, tibialis raises and balance work, because the stone is uneven the whole way.
• Pack time. Training with no weight and then carrying a daypack for four days is a common gap. Even a few kilos change your posture, balance and joint load. Walking with a loaded pack closes it. Start light, build gradually, and use the pack and shoes you’ll take to Peru.

On our own training: we train year round through our work, so we arrived already conditioned for this kind of effort. That was the difference between enjoying the four days and getting through them.

If you already train regularly, you’re partway there. If you don’t, start a structured block. Our 8-Week Trekking Fitness Plan covers the same ground: strength for the climbs, step-downs with slow lowering for the descents, stair climber sessions, aerobic conditioning, and a ruck progression that builds from 45 to 75 minutes up to 3 to 4 hours by week 8.

Crowds, queues and the 3 am start on day four

The trail has a reputation as a quiet pilgrimage. Expect altitude headaches, busy campsites, basic toilets, and weather that swings from hot sun to cold rain inside a day. None of that ruins the trek. It’s easier when you know it’s coming.

You won’t have the path to yourself. With 500 people a day on the trail, there are bottlenecks when groups leave camp at the same time, at the popular break spots, and most of all near the end. Two of them stood out for us.

The checkpoint on the final morning. Groups are up around 3 am to line up at the checkpoint below Wiñay Wayna, which opens at 5:30 am. Everyone waits there in the dark before the walk to the Sun Gate. We found it tedious.

The Sun Gate. This is the first view of Machu Picchu and the photo people book the trek for. Many companies pass through on the same morning, so expect to queue for it. Still worth it.

You start day four tired. Knowing about the crowds, the facilities and the early wake up ahead of time is half the mental work.

What gear to bring

Our Inca Trail packing list has the item by item detail. These are the decisions that matter most.

• Layers. You pass through humid cloud forest, cold mornings near the passes, strong midday sun and a warmer finish around Machu Picchu, sometimes all in one day. Merino or synthetic base layers (no cotton), a light insulating layer and a waterproof shell cover it. Add a warm hat, a sun hat and sunscreen, because UV is stronger at altitude.
• Footwear. We brought both hiking boots and trail runners, and we’d lean toward trail runners if your ankles are strong. Boots give more support on uneven steps. Trail runners are lighter, and over four days of stairs that adds up. If your ankles are weak or you’re unsure, take the boots. Either way, break them in well before you fly.
• Trekking poles. Worth bringing for the staircase descents alone. They need rubber tips on the Inca Trail, to protect the stonework.
• Daypack. Porters carry the camping gear, so you carry only a daypack. Keep it to water, layers, a rain shell, snacks and sun protection. You don’t need fresh clothes every day, and charging is limited. Operators usually set a weight allowance for the duffel the porters carry for you, often around 7 kg including your sleeping bag, so check yours before you pack.

One mistake from our own trip: we both expected day two to be the hardest and underestimated day one. It was hot down in the valley, and one of us found it more draining than expected. Don’t write off the first day because the profile looks gentle.

The best moments: Intipata and the Sun Gate

The moment we look back on most is Intipata, on day three.

After what felt like three thousand stone steps down through cloud forest, the trail comes out in the middle of steep agricultural terraces, high above the valley with almost nobody around, looking straight down at the Urubamba River. It’s the view we still talk about.

The Sun Gate view of Machu Picchu is the “there it is” moment, and you share it with a much bigger crowd. Both are worth the walk. The quiet one is the one we remember first.

Respecting the trail and its porters

The trail runs through the Historic Sanctuary of Machu Picchu, a UNESCO World Heritage site, on paths the Inca built.

Stay on the marked path, leave every stone where it is, follow your guide’s rules on photography and where you can walk in the ruins, and learn a few words of Quechua for the people you meet.

Your trek pays the guides, porters and cooks who make it possible. Tip them fairly (ask your operator for current guidance on amounts) and pack out everything you bring.

Porter welfare is worth asking about before you book. Peruvian law caps porter loads at 20 kg for men and 15 kg for women, and loads are weighed at the trail checkpoints. Some operators still underpay, or cut corners on food and sleeping gear for their staff. Ask how porters are paid, fed and equipped, and choose a company that answers plainly.

Alternative treks if permits are sold out

If permits are gone for your dates, these three treks run outside the Inca Trail permit system. You still need a Machu Picchu entry ticket if you plan to visit the site.

Trek	Days	High point	What it’s like
Salkantay	4 to 5	about 4,600 m	Longer and higher than the Inca Trail, under the glaciers of Salkantay and down into cloud forest. Finishes near Machu Picchu.
Lares	3 to 4	4,400 m or higher, depending on route	Quechua villages, weaving communities and hot springs, with a train to Machu Picchu at the end.
Choquequirao	4 to 5	about 3,050 m at the ruins	A drop of about 1,500 m into the Apurímac canyon and a climb back out, to a large Inca site with very few visitors. The standard trek doesn’t go to Machu Picchu.

Salkantay is the more demanding of the two that finish at Machu Picchu. Choquequirao is the one to pick if you want ruins without the crowds and don’t mind the canyon.

When Inca Trail preparation should start: a timeline

Booking and training run on separate clocks, and you need both.

• About 12 months out. Research operators, pick your dates and choose backups.
• When permit sales open. Book. For peak season, have your passport details with your operator before that day.
• 12 to 16 weeks out. Start training if you’re building from a low base. Eight weeks of structured work is workable if you already train. Get a medical check and start wearing in your footwear.
• 4 weeks out. Make it specific: more stairs, longer walks, the pack you’ll carry.
• Final week. Ease off so you arrive fresh.
• 3 days before the trek. Be in Cusco.

The three things that matter most

Book early, train for the descents, and get to Cusco three days ahead.

The permit only gets you to the trailhead at Km 82. Dead Woman’s Pass at 4,215 meters and the stone steps down the far side are on your legs, so train for both before you fly to Cusco.

This is the kind of trek our 8-Week Trekking Fitness Plan is built for.