Classic Inca Trail Trek – 4D/3N Group Service
The historic Inca Trail is commonly referred to as one of the best hiking trails the world has to offer. It's also a route that you need no prior experience to do - just a comfortable pair of boots and Alpaca Expeditions as your trusted guide. You will cover 43KM (26 miles) in 3.5 days of hiking - climbing passed two mountain peaks and stopping by numerous ruins along the way. This is the only hike that allows you to go directly through the Sun Gate into Machu Picchu - seeing the amazing ruins from above for the first time. But please book early, because permits sell out months in advance.
Day 1 : Cusco – Piskacucho Km 82 – Llactapata- Ayapata:
Alpaca Expeditions will pick you up from where ever you are staying in Cusco, Urubamba or Ollantaytambo. Pickup from Cusco will be at 4:30AM, from Urubamba 5:30 AM and if you stay in Ollantaytambo, you get to sleep in a bit with your pickup at 6:30 AM. At your briefing, these times will be confirmed as they might fluctuate based on where you staying. We will then drive to Km 82, arriving at about 7:00AM. After a delicious breakfast prepared by your cook, we’ll go through the first Inca Trail checkpoint to begin our trek (please make sure you have your original passport with you to enter the Inca Trail). The first 2 hours of the trek are relatively easy as we make our way to our first Inca site, Patallacta which is an ancient Inca checkpoint for the approach to Machu Picchu. From Patallacta it’s another 2 hour hike to our lunch stop. After lunch we will hike for another 2½ hours until we reach the first night’s campsite at Ayapata (3300 meters). On this last stretch we pass through 2 small communities. If you want to buy any energy drinks or snacks you can do so here, you can also buy any essential items such as batteries that you may have forgotten. We’ll arrive to our campsite by 5:00PM and after settling in for a bit you can relax and have a hot drink and snack with your team of porters, chef and guide. By 7:30PM your dinner will be ready, and afterwards you can get some well-deserved rest.
Walking distance: 8.7 miles/14 km (6-7 hours)
Campsite altitude: 3300 meters (high) above sea level
Considered: Moderate day (getting used to the Inca Trail)
Weather: Warm and windy
Day 2: Ayapata – Dead Woman´S Pass – Runcuraccay Pass – Chaquiccocha:
Your porters will wake you up early with a hot cup of coca tea to get you ready for the day. Today is our longest day and we will start early. We’ll hike for roughly 4 hours to the highest pass of the trek, Dead Woman’s Pass (4215 meters/13829 feet). On reaching the pass we’ll stop for a short break to enjoy the views before setting off again to descend to the next valley (Pacaymayu Valley – Hidden River). It’s another hour and a half down the side of the valley to our lunch spot and a chance to refill our water bottles. After lunch we begin ascending again to the second pass of the trek. It’s 2 hours to the pass and along the way we’ll stop at a small Inca site (Runcu Raccay) and see two huge waterfalls cascading down the opposite side of the valley. After the second pass, it’s another hour downhill hike to reach the magnificent Inca site, Sayacmarca (an otherwise inaccessible village).
We’ll stop here for a rest and have a quick tour of the site and then watch the sunset over the Vilcabamba mountain range. It’s then just another 20 minutes until we stop for the night at our second campsite Chaquicocha (Dry Lake, 3600 meters). After dinner, if you’re not too exhausted, we can do some star gazing and we’ll point out the fascinating Inca constellations. In the magnificent Southern Hemisphere sky, away from all the artificial lighting, this sky is something to behold!
Walking distance: 9.94 miles/16 km (7-8 hours)
Campsite altitude: 3600 meters (high) above sea level (chilly weather)
Considered: Top day (you will have survived the two highest passes)
Area: Andes and Cloud Forest
Weather: Cold and rainy
Day 3: Chaquiccocha – Wiñaywayna:
Completing Day 2 and beginning Day 3 certainly deserves a pat on the back! We begin early again, waking up at 6:30am to begin what is commonly felt to be the most beautiful day of the whole Inca Trail. We hike for 2 hours along what we like to call “Inca flat” (gradual inclines) and begin to enter the jungle, known as the Cloud Forest. As we walk we will have the opportunity to see the majesty of Salkantay, the second highest snow-capped mountain in the Sacred Valley, and a fantastic panoramic view of the Vilcabamba mountain range. Towards the end of the Inca flats we begin to make our way up to the last peak at Phuyupatamarka (3600 meters) from where we’ll have great views overlooking the Urubamba River. Down the valley we get our first views of Machu Picchu Mountain but the site itself is still hidden from view. From Phuyupatamarka it´s a 3 hour walk down a flight of steps to our last campsite, close to Wiñay Wayna (Forever Young). Wiñay Wayna is the most spectacular Inca site on the trail after Machu Picchu and the most popular campsite because of its proximity to Machu Picchu.
During the descent we visit 2 Inca ruins, Phuyupatamarka (Town in the Clouds) and Intipata (Terraces of the Sun). We arrive at our campsite around 1:00PM to have lunch and then relax for the entire afternoon so that you’re relaxed and ready for your final day at Machu Picchu. At around 4:30PM your guide will give you a short orientation and you will visit the Inca ruins of Wiñay Wayna, spending about an hour and a half there. We will explain the significance of the site and combine all the information given during the trek so you’re fully prepared for your visit to Machu Picchu the following day.
We like to spoil our guests as we enjoy our last feast with the porters and chefs. It’s an Inca Trail tradition to organize a ceremony in the evening to introduce the team to the tourists once again and to thank them for the great job done (if you wish to provide tips for them then you can do so at this time). It is advisable to go to bed at a reasonable time in order to get up in the early hours of the morning to arrive to Machu Picchu at the crack of dawn in the hopes that the weather will give us a beautiful sunrise over the ruins at Machu Picchu.
Walking distance: 6.2 miles/10km (5 hours)
Campsite altitude: 2.600 meters (high) above sea level (chilly weather)
Considered: Easy day – all downhill!
Area: High Cloud Forest
Weather: Warm and very humid
Day 4: Sun Gate - Machu Picchu – The Lost City Of The Incas
Wake up time is at 3:30AM. We’ll eat breakfast at 4:00AM and wait at the checkpoint to be one of the first to start trekking when they open the gates at 5:30AM. We’ll wave goodbye to our team of porters and chef and then it’s “Forward On” to the Sun Gate (Inti Punku). From here we have spectacular views of the mountains and Machu Picchu in all its glory. We reach the Sun Gate by 6:30am and then it’s just an hour trek downstairs to reach the Lost City of the Incas. As we approach Machu Picchu the views of the city just get better and better! At about 7:40AM we’ll reach the final checkpoint and enter Machu Picchu to begin our 2 hour private guided tour. After the tour you’ll be given your bus tickets to make your way down to Aguas Calientes and you’ll have plenty of free time to explore on your own or climb one of the neighboring mountain – Huaynapicchu (must be arranged ahead of time). Your guide will offer to meet you down in the village of Aguas Calientes to enjoy your last lunch in a local restaurant. This is optional and not included. At lunch, he will hand out train tickets, so if you choose to skip, please arrange to get these before leaving him at Machu Picchu.
Unless you arranged for an upgraded train, we will book the Expedition class train departing Aguas Calientes at 4:20. Please make sure you are on the platform at least 30 minutes ahead of time. This train will be 2 hours to Ollantaytambo where an Alpaca driver will meet you and drive you back to the city in our bus, then we will drop you off at your hotel.
Considered: The most exciting and magical day (early wake up 3.30AM)
Area: High Cloud and Subtropical Forest
Weather: Hot and very humid (bring lots of water)
All of our guides studied English and tourism at Cusco National University. They all grew up in this region and have a true passion to teach others about their heritage. They are fun yet professional and will ensure you are safe and happy.
As soon as we receive your details and a deposit, we will purchase your permits (pending availability, check our Inca Trail Availability link). These permits are for a specific date and in your name. They can’t be changed, once confirmed. Only your passport number is allowed to be updated. The permit includes an entrance to Machu Picchu.
The night before your trek, you will come to our office for your briefing. You will receive your duffel bag that will stay with your porters, while you hike. This bag should not exceed 7kg/14 lbs and does need to include your sleeping bag and air mattress.
We include a personal porter, who is responsible for carrying your duffel bag. There is no additional fee for this. You will not have access to your duffel bag until your evening campsite.
All your transportation is included in this trek. You will be picked up directly from your hotel around 4 a.m. (unless you are staying in Ollantaytambo) and brought to KM 82, to begin your trek. The train back from Aguas Calientes is included. This is Expedition class but can be upgraded to the Vistadome train for $75 per person. Once you arrive at the train station, you will be brought back to your hotel in Cusco. Your bus down ticket from Aguas Calientes to Machu Picchu is also included.
Alpaca Expeditions has the best equipment. We use Eureka Timberline 4 tents that are shared by only two people. You will have a spacious dining tent to enjoy your meals in.
The Alpaca Expeditions chefs cook delicious meals that many previous trekkers have raved about. We honor all food restrictions. Be sure to remind your tour guide of any food restrictions at the beginning of your trek. Food is typically served family-style.
You will enjoy breakfast, lunch and dinner each day of the trek, along with a happy hour of tea and snacks. You will also be provided a snack each morning, for you to enjoy along the hike. Your last meal with your chef will be after breakfast on day four. Lunch the last day is not included.
Beginning from your first lunch until your last breakfast, Alpaca Expeditions will supply all the water needed. This water will be boiled, filtered and then cooled, before distributing. You must supply your own water bottles or camel back. We recommend carrying about 3L worth. We will refill our waters at each meal.
Every Alpaca Expeditions guide has received training in first aid from a physician. We conduct mandatory training sessions every February, which every single Alpaca tour guide must attend. Your tour guide will always have a first-aid kit for basic medical problems (traveler’s diarrhea, cuts, scrapes, etc.) and oxygen. We will get you off the trail as quickly and comfortably as possible, if needed, and ensure you get directly to a clinic for treatment.
We believe it's the attention to small details that separates us from other tour companies. Every trekker receives a small pillow to sleep with, a foam mattress for insulation, a day pack cover to protect their things while hiking and a rain poncho. We will work hard to create your best vacation.
Our top priority will always be the safety of our clients and our team. While we are prepared and all our guides are trained for most of the issues clients have on the mountain, being a phone call away from any doctor, hospital or friend helps everyone feel assured that they are safe. Radios, which all our guides have, are limited in how far they can reach, so Alpaca Expeditions has added Satellite Phones to every trek. Every guide will have a fully charged phone that can be used anywhere on the mountain to connect us anywhere in the world. And they can be used by our clients for non-emergencies as well. While they are not cheap to use, they are available just in case you need to check in on the puppy you left at home with grandma.
Every trekker needs a sleeping bag, when camping. Inflatable air mattresses and walking sticks (with rubber tips) are optional, but encouraged. If you don’t want to bring any of the above, they are all available for rent:
Sleeping Bag: $20
Inflatable Air Mattress: $15
Walking Sticks (Pair): $15
Huayna Picchu is the mountain that stands next to Machu Picchu. It is a 45 minute hike to the top. Going back down is quite steep, if you are scared of heights. This is done after your tour of Machu Picchu. The cost is $75. Arrangements need to be made at least one month in advance, due to popularity. Please understand that weather is out of our control.
We can depart any day of the week, as long as permits are available. Please remember, permits are only needed for your start date.
2017 price (March 2017 through January 2018):
$665 per person
$35 off per person
Student discounts apply to anyone who has a valid GREEN ISIC card at the time of the trek or who is 16-years-old or younger. For those using an ISIC card to receive the discount, we need to see a copy of the card at booking. For those booking children 16-years-old or younger, we need a copy of their passport at booking time. Please send all to firstname.lastname@example.org.
More Information about ISIC STUDENT CARD
Below is a quick list of prices, but check our Additional Options section for more details.
Huayna Picchu: $75 per person
Vistadome Train (one way): $75 per person (Train is typically purchased at 3:22 PM leaving Aguas Calientes)
Huayna Picchu is the mountain that stands next to Machu Picchu. It is a 45 minute hike to the top. While this hike is done on your own, your guide will direct you to where this hike begins. This is an additional entrance ticket that we can secure for you with advance notice.
The ticket is $75 per person.
Machu Picchu Mountain
Machu Picchu mountain is the other mountain that stands above the Machu Picchu ruins. It offers even more stunning views than Huayna Picchu, but takes an hour and a half to reach the top. This is an additional entrance ticket that we can secure for you.
This ticket is $75 per person.
All our tours include the Expeditions (Tourist) Train. This train is normally booked at 4:22 p.m., leaving Aguas Calientes. The Vistadome train is an upgraded train, that offers slightly larger seats, windows and even some entertainment. Normally, the Vistadome train is booked at 3:20 p.m. and travels to Poroy, a train station closer to Cusco. While this is an upgraded fee, we will still include your transportation back to your hotel.
This train is $75 per person.
Getting to Cusco
The airport in Cusco currently is only for domestic flights, so all international travelers by plane must disembark in Lima and go through Customs. Even if your flight to Cusco is the same day by the same airline carrier, you must grab your bags in Lima and then check them back in.
The best way to get to Cusco is by air and there are several options in airlines. LAN tends to be the most expensive, but has the most options and flights. Expect delays or flight cancellations. Due to the high altitude of Cusco, it tends to be difficult to land and any acclimate weather will stop air traffic. Bus travel is always available and while the trip can be long, especially from Lima, the buses in Peru are very well maintained and comfortable. This option is strongly encouraged if coming from a city closer to Cusco, like Puno. Lima buses will take about 20 hours to arrive.
Any extra luggage you have with you can be left safely in Cusco at either your hotel or with us at the Alpaca Expeditions deposit while you trek. We will grab from you the morning of your trek and return once you are back in Cusco. Make sure your bags have some kind of identification on them so they are easy to locate.
As soon as people book their trip to Peru, specifically Cusco, they start wondering about altitude sickness. The air at high altitudes contains less oxygen than at sea level and forces your body to work harder to get the oxygen it needs. Over several days at high altitude, your body adjusts to the lower amount of oxygen in the air. This is why we always recommend spending at least two days in Cusco before beginning any trek. If you have more time, even better. Cusco is an amazing city with a lot to do, so you won’t be bored.
With altitude sickness, you may first feel like you have the flu or a hangover. You may have a headache, tiredness, loss of appetite, nausea or vomiting, dizziness, trouble sleeping, trouble breathing during exercise. If any of these effects become severe, please contact our office and we will help you get to a doctor.
Most of the time, these symptoms will be mild. We always recommend easing into activity slowly, allowing your body to adjust. Drink plenty of fluids such as water or coca tea. Coca tea has been used since ancient times to help prevent altitude sickness. Leaves from the Coca Plant contain alkaloids which helps bring oxygen into your blood, helping your body avoid the effects of altitude sickness. Avoid drinking a lot of alcohol and coffee. They will cause you to urinate more often and become dehydrated. Avoid smoking. Smoking makes it more difficult for your body to get oxygen. Avoid sleeping pills. They may cause shallow breathing at night, making it more difficult for your body to absorb oxygen while you sleep.
Remember the trek to Machu Picchu is not a race. Even those in the best shape will suffer from altitude sickness when they race to the top of the mountain too quickly. Go slowly, it will give your body time to adjust to the mountain.
Your healthcare provider may prescribe medicines, such as acetazolamide and dexamethasone, to help prevent altitude sickness. Start the medicine two days before you get to a high altitude. Continue to take it while you are at high altitude.
You must remember that this is your holiday and you do not want to stress out about the possibility of getting sick from the mountains. Do everything slowly. Drink lots of water. And enjoy the coca tea. If anything does happen and you unfortunately get sick, let your guide know right away – all Alpaca Expeditions guides are trained in how to help you get through it.
Of course weather is unpredictable. Typically the dry season in Cusco is from April through October, but this does not stop rain from falling in June or the sun from coming out in December – just be prepared. No matter what month you are doing the trek, please make sure that you have rain gear that includes a waterproof jacket, pants, poncho and waterproof gloves. Many people forget about gloves, but being cold and wet makes hiking very unpleasant.
Also prepare for four seasons. Many of the treks through the Andes involve many micro-climates and you will need to be prepared for all seasons. Layers are always key as they are easy to adjust to the different temperatures. And evenings will always be cold, so please be prepared with a warm winter-weight jacket.
Every Alpaca Expeditions guide has received training in first aid from a physician. We conduct mandatory training every February – every single Alpaca guide attends. When guiding you, they will have with them a first aid kit for basic medical problems (traveler’s diarrhea, cuts/scrapes, etc.) and oxygen. They know how to make you feel better.
In case something unexpected happens and you feel you can no longer complete the trek, they will figure out the safest and quickest way off the course and to a clinic. You will never be left alone, you will have a member of the team escort you every step of the way until safely with a doctor. When you are feeling up to it, we will make sure that you still have the chance to visit Machu Picchu and re-connect with your group, traveling by train comfortably.
To protect your travel investment, we highly recommend the purchase of travel insurance. Obtaining travel insurance before you leave home is strongly encouraged and very easy. In fact, we work with a great agency in the United States that has helped to make it easy and affordable. This is a great way to protect yourself while visiting Peru.
If interested in booking through our trusted partner, Ahart, Frinzi & Smith, CLICK HERE.
Alpaca Expeditions uses biodegradable soap and transports all our garbage back to Cusco. Our porters are trained to look after the trail and pick up any waste from other groups, as well. We also use environmentally-friendly chemical portable toilets that allow us to pack waste out. We believe in leaving no footprint behind.
Alpaca Expeditions is really proud of the work we do for our community. This is a main focus for our company. We have worked with villages directly to help supply them with needs their families were missing. We have supported local schools by giving them computers and books. We currently sponsor a teacher at the village most of our porters come from to ensure their children are offered the best education.
We buy all our food from local farmers and markets and serve the freshest ingredients. We provide English classes for all our team: guides, porters, chefs and drivers. And we are building a house for our porters to give them a safe and comfortable place to stay before and after our treks so they no longer need to sleep on the floor of a friend.
And twice every year we bring our porters and their families to Machu Picchu. This is our favorite trip to do as the guys who work tirelessly have never visited the Lost Citadel of the Incas. Showing them this place is our biggest honor.
We are always looking to do more for our partners. Please let us know of your ideas and we will work to help.
Personal Porter Included
All of our treks include porters, who are responsible for carrying and setting up all equipment. They will also carry your personal duffel, which you will receive at your briefing the night before your trek. This duffel can not exceed 7 kg/14 lbs, and must include your sleeping bag and an air mattress.
Each Alpaca Expeditions porter is given a proper uniform, salary and insurance. They are the backbone of our company.
- Valid, GREEN ISIC card (if you booked as a student)
- Immigration Card (given on the plane as you enter Peru)
- Good daypack (the smaller, the better)
- Water storage: Water reservoir like Camelbaks are encouraged - but enough for at least 2-3 liters.
- Comfortable hiking boots (lightweight with good soles)
FOR YOUR DUFFEL:
Porters will carry up to 7 kg of your personal items. This must include your sleeping bag and air matt (if you bring/rent one). From us these two items weigh 3.5 kg.
- 2-3 wicking t-shirts
- 2-3 hiking pants
- 4 sets of undergarments.
- 4 sets of hiking socks
- 1 Fleece
- 1 Warm, down jacket: gets very cold at night
- 1 Rain jacket and pants
- 1 sun hat
- 1 wool hat
- Headlamp: essential
- Waterproof gloves (even if they are ski gloves, take them)
- Comfortable shoes for camp
- Walking boots
- Waterproof jacket/rain poncho
- Quickdry towel. We provide small ones, you might enjoy something a little larger.
- Small bottle of soap: we provide warm water each day to clean - might make you feel fresh if you had a little soap.
- Battery Charger: There is no place to plug in while trekking!
- Large plastic bags: to help organize and keep clean from dirty.
- Sleeping bag: Recommend down bags for -10C at least
- Face moisturizer
- Bug spray
- Wet wipes
- Toothbrush and paste
- Personal medication
- First aid kit: band aids, moleskin, etc.
INSIDE YOUR DAYPACKS:
Daypacks can be any size for hiking, but we always recommend the smaller, the better. Inside Machu Picchu, no bag larger than 25L will be allowed in. If larger, you will need to store outside citadel gates.
- Water: we supply clean water at each meal. You are responsible for your first morning of water only as we won't have time to filter water until your first lunch.
- Rain gear
- Music (IPhone)
- Toilet paper and small plastic bag for waste
- Extra Money for Souvenirs, Drinks & Tips
FAQs on the CLASSIC 4D/3N INCA TRAIL TREK
PREPARING FOR YOUR TRIP
We try to make booking as easy as possible at Alpaca Expeditions. We need a completed booking form that includes all the details for the entire party (on one form, please) and then a $200 deposit per person. The deposits can be paid separately as long as we have one form that we can use to track payments. Once we have all deposits and details, we will then book your permits. When permits are in our hands, we will send you your invoice and confirmation that everything is 100% set. All start dates, once confirmed, are guaranteed.
Only licensed Inca Trail tour operators, like Alpaca Expeditions, can secure permits from the government. Once we have secured your permit, the name and start date can not be changed under any circumstance. The only information that the government allows us to change is passport numbers.
UPDATING PASSPORT NUMBERS
The government will only allow us to change passport numbers if we have a copy of the new passport and old passport. If you no longer have your old passport, any government issue ID will be accepted, as long as the name is the same.
HOW TO GET TO CUSCO
Most people will get to Cusco by air. Please remember that Cusco airport is for domestic travel only, so if you come directly from overseas through Lima, you must get your bags in Lima and re-check them for flight to Cusco. There are four airline carriers that fly roundtrip between Lima and Cusco: LATAM Airlines, AVIANCA Airlines, Star Peru and Peruvian Airlines. All of them offer similar schedules and in-flight service, but we usually recommend either LATAM airlines or AVIANCA as they tend to be the most helpful when unexpected flight cancellations or delays occur.
WHERE TO STAY IN CUSCO
While you can truly stay at any hotel in Cusco, the city is becoming more and more difficult to navigate by car. Many roads, especially by the main square, are open to pedestrian traffic only. We will notify you if it is not possible to pick you up by car and arrange another meeting point for pick up/drop off. For a list of recommended hotels, please ask your Alpaca Expeditions sales rep.
CAN I STAY IN THE SACRED VALLEY
Ollantaytambo is the best place to stay other than Cusco. By staying in Ollantaytambo, you actually get a little more sleep because we will be picking you up about 1.5 hours after the Cusco pick up time. This being said, the pre-trip briefing can only be done in Cusco, so please arrange with your Alpaca Expeditions sales rep a time that works for you and our office team.
CAN I SPEND AN EXTRA NIGHT IN AGUAS CALIENTES
Of course. If you are ok with taking the same train out of Aguas Calientes that is part of your original itinerary, which is typically at 4:22 that evening, than there is no additional charge to move the train back a day. If you need us to secure your hotel or another visit to Machu Picchu, this will be an additional cost. If you do choose to spend one more night in Aguas Calientes, make sure you tell the Alpaca Expeditions office at least one month in advance so your train ticket is purchased for the right day.
WHAT TYPE OF ELECTRICAL OUTLETS ARE USED IN PERU
Most hotels and even homes in Peru now have the standard US outlet and also the South American outlet.
DURING YOUR TRIP
HOW CHALLENGING IS THE TREK
While you don't need any specific training to do the 4 Day Inca Trail, being fit will help you complete the 4 days comfortably. The best preparation for the trek are treadmill exercises with steep inclines and stairs. Day 2 will be your toughest day as you will climb up 2 peeks that day.
DO YOU NEED HIKING BOOTS
We always recommend light hiking boots if possible. Ones with ankle support are extra helpful, especially for the inexperienced hiker. Because you will be climbing down so many steps created by the Incas, now uneven and at varied heights, the extra support helps from twisting your ankles.
SHOULD I USE WALKING STICKS
Walking sticks are always helpful to trekkers, but particularly on this trek. There are SO many stairs that you will be walking down - all made by the Incas 400 years ago. They vary in height and are not all straight. Using the walking sticks can really help take the pressure off your knees while doing this portion of the trail. Plus they will help you get up the mountain as well. All our walking sticks are expandable black diamond poles that can be folded up and tied to your bag for when you are not using them. For those who are bringing your own, make sure you have rubber tips or the rangers will not allow you to use them. Rubber tips can be purchased in Cusco if you forget before you leave.
WHERE DO I STORE MY LUGGAGE
All luggage not needed for the trek should stay in Cusco. All hotels are very accommodating and quite used to storing luggage on site, or you can safely store with the Alpaca Expeditions team.
WHAT SHOULD I EXPECT AS FAR AS WEATHER
Please understand that this is an impossible question for us to answer. Historically April through September is the dry season, November through February is the rainy season and March and October and bridge months - a mixture of both. But the clouds have not followed these rules in the last few years. Prepare for sun and rain no matter when you come. As far as temperature, that is consistent throughout the year. Mornings and evenings are cold, so bring a fleece at least to begin the hike and a down jacket for the evenings. Once the sun is fully up you should be comfortable hiking and touring Machu Picchu in short sleeves. Long pants (yoga or hiking) are encouraged to help from the mosquitos which can be a nuisance in Aguas Calientes.