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Updated April 2026

General Trek & Climb Information

Everything you need to plan well and stay safe in the Cordillera Blanca and Huayhuash — when to come, acclimatisation, what to pack, and how we look after you on the mountain.
[ 01 ]

When to Come & the Best Seasons

The Peruvian Andes catch weather from two directions at once — the Pacific on one side, the jungle on the other — so the year has traditionally split into a "dry" season and a "wet" one.

The most settled weather usually runs from May to September, with quieter shoulder weeks in mid-April and from late September into October. That said, a changing climate has blurred the old lines: you can now get clear spells deep in the rainy months and the odd grey, wet day in what used to be the driest weeks of June, July and August. June to August is busiest on the trails; May and September are quieter, and May is lovely — everything still green from the rains and the alpine flowers in bloom.

For climbers: 5,000m and non-technical peaks are at their best from May to September. The 6,000m and more technical peaks generally only come into safe condition from mid-June to August, with the hardest lines often not ready until early July.

[ 02 ]

Group Sizes & Getting to Huaraz

We take private groups, families and people travelling on their own. We do not run fixed departure dates — we build each trip around your plans. If you are travelling alone and would like company, we can post your dates on our Join a Group page and pair you with others to share the trail and the costs. Groups formed that way are kept to 6 to 8 people, so the trek never loses its personal feel.

Getting from Lima to Huaraz: Huaraz sits 400km north of Lima. You can fly in on the one-hour LATAM service (a morning departure each day) or take one of the comfortable overnight VIP buses — Cruz Del Sur, Movil Bus and Oltursa run fully reclining seats for the roughly 8-hour road journey. We can also arrange a private transfer by car, minivan or bus.

[ 03 ]

Life in Camp, Hygiene & What You Carry

On treks and on the walk in to most base camps, our donkeys carry the tents, food and the bulk of the kit. You carry only a light daypack — rain jacket, water, a snack, your camera. We ask you to keep your trek bag to 12kg to 15kg, and we work only with licensed arrieros who keep their animals well. The arrieros reach camp ahead of you, pitch the tents and have water boiling for tea by the time you arrive.

Water & hygiene: all drinking water is brought to a full boil for two minutes, which is enough to kill anything in it, and your bottles are refilled daily. There are hand-washing stations, private toilet tents in the Cordillera Blanca, and our kitchen crew are trained in safe food handling. It is the unglamorous detail that keeps people healthy at altitude.

Regional Analysis

Cordillera Blanca or Huayhuash?

We are frequently asked what is the difference between the two regions or which is better for trekking in. Both areas are very spectacular but different and it is impossible to compare them. Both have amazing snow capped mountains and glaciers that you hike by very close to & both have continuous breath-taking hikes up to high passes with incredible views on most days of the treks.

The Cordillera Blanca

  • Located within Huascaran National Park (Entry ticket required)
  • 1 to 4 hours drive to trailheads (Start hiking on Day 1)
  • Steep granite valleys, glaciers, and terminal turquoise lakes
  • High biodiversity with 6 unique habitats and forested areas
  • More interaction with local agricultural villages and communities
Alpamayo Circuit Master Entry

The Cordillera Huayhuash

  • Private community-owned land (Multiple local camping fees apply)
  • Minimum 5 hours drive to trailhead (Actual hiking starts on Day 2)
  • Open, vast valleys, expansive grasslands, and razor-sharp peaks
  • Large alpine lake systems, many containing trout for fishing
  • Extremely remote with very few local settlements or farms
Jahuacocha Alpine Loop Entry
Expedition Logistics

Expedition Trekking Gear

Load Protocol

Donkey Train Only

We Provide (PAA Logistics)

  • Four-season client tents & sleeping mats

  • Dining tent with tables, chairs, and lighting

  • Private toilet tent with paper, water & soap

  • All cooking equipment, gas, and gourmet meals

  • Emergency oxygen cylinder & pulse oximeter

You Need to Bring (Personal)

  • High-quality sleeping bag & personal liner

  • Day backpack & large duffel bag (Max 15kg load)

  • Worn-in, waterproof hiking boots & camp shoes

  • Goretex rain jacket and waterproof overtrousers

  • Down jacket, warm layers, UV sunglasses & 2L water capacity

Expedition Logistics

Mountaineering Gear Specs

Load Protocol

Porters & Donkeys

We Provide (PAA Logistics)

  • High-altitude four-season expedition tents

  • Dynamic climbing ropes & technical group gear

  • Ice screws, snow stakes, and anchor systems

  • VHF Walkie-Talkies & Satellite Phone (if remote)

  • High camp specialized stoves & dehydrated provisions

You Need to Bring (Personal)

  • Double plastic or heavily insulated mountaineering boots

  • Technical ice axes, harness, ATC, and automatic crampons

  • Climbing helmet, carabiners, and prusik slings

  • Extreme sub-zero sleeping bag & inflatable Thermarest

  • Expedition-grade down jacket, overmittens, and snow gaiters

Critical Evacuation Protocol

Acclimatisation, Rescue & Insurance

Everything around Huaraz happens above 4,000m, and you gain height fast once you leave town — so acclimatisation is not optional, it is what keeps you safe and lets you enjoy the trek.

Give yourself time: we ask you to arrive in Huaraz at least 2 full days (3 nights) before any trek, with day hikes to higher ground to let your body adjust. For climbing, you need more — a trek of at least 3 days or a run of high day hikes first, and for a 6,000m or technical peak we add a 2-to-4-day preparation climb on a 5,000m peak. Altitude sickness is real, and in its severe form — pulmonary or cerebral oedema — it can kill if it is ignored. On every trek a guide checks your oxygen levels and how you are feeling, morning and evening.

About rescue, honestly: there is no helicopter rescue in the Huaraz region. Search and rescue is carried out on foot by teams of police and mountain guides, which takes real effort and time. That is exactly why we run a high staff-to-client ratio and carry oxygen, a first-aid kit and an evacuation plan on every trip.

Susan (USA) — evacuated from IshincaYour evacuation process was very impressive, as was your ability to get me directly to the correct doctor once back in Huaraz. I will be having surgery and look forward to a fairly speedy recovery.

Insurance is essential: the Peruvian police will not start a high-mountain rescue until they have either cash in advance or a verified guarantee of payment. Comprehensive travel insurance that covers trekking and mountaineering — including medical care, rescue, evacuation and repatriation — is required to join us, and we ask for your policy details with your booking.

Rescue Commitment

Our high staff-to-client ratio ensures that in the event of an emergency, a dedicated team is immediately detached for evacuation without compromising the mission of the main group.