The Santa Cruz trek is the classic multi-day route of Peru’s Cordillera Blanca: roughly 50 kilometres over three to four days, threading two high valleys beneath some of the Andes’ most famous peaks — Huascarán (6,768 m), Alpamayo (5,947 m), and Artesonraju (6,025 m) among them. It is a moderate-to-difficult trek whose crux is the Punta Unión pass at about 4,750 m. You can walk it independently or with one of the many agencies in Huaraz, but either way the non-negotiable part of the plan is acclimatisation.
The Route in Brief
The usual direction starts at Cashapampa (around 2,900 m) and climbs the Santa Cruz valley to Llamacorral camp (3,750 m) on day one. Day two continues past turquoise lakes such as Jatuncocha to Taullipampa (4,250 m), with an optional side trip to the Alpamayo viewpoint. Day three crosses the Punta Unión pass at 4,750 m — the continental divide — then descends steeply to the Huaripampa valley and out toward Vaquería. Total distance is usually quoted at 50–54 km with around 2,400 m of cumulative ascent.
Getting to Huaraz and the Trailheads
Huaraz (3,050 m) is the trekking hub, and the journey there is part of the acclimatisation strategy. By road from Lima it is about 404 km, typically an eight-hour journey on comfortable overnight cama buses run by several companies. There are also domestic flights from Lima to Anta airport near Huaraz (around 70 minutes) with limited carriers, so book ahead in season. Agencies collect you in Huaraz and drive to Cashapampa (about an hour) on day one.
Best Time to Go
The dry season, roughly May to September (some operators extend this to mid-April–October), brings the clearest mountain views and the most stable trail conditions. Outside these months you will find far fewer people but much more unsettled weather. Treks can run year-round except the wettest weeks, but the rainy season is genuinely unpleasant at these altitudes.
Costs and Park Fees
The trek lies inside Huascarán National Park, which charges a daily entrance fee — recent travellers report around S/10 per day, but confirm the current rate locally as fees are revised periodically. Guided 4-day treks are widely advertised in Huaraz; prices vary enormously with group size and equipment quality, from a few hundred soles per person with budget operators to several hundred US dollars for private groups, so shop around and compare what is included (meals, tents, donkeys, sleeping bags). On guided treks, donkeys typically carry your main bag (around 5 kg per person) while you walk with a daypack.
Acclimatisation: The Critical Step
Do not underestimate 4,750 m. Spend at least two to three full days in Huaraz before starting, ideally with a warm-up day hike to higher ground. Walk the trek’s pacing conservatively, hydrate constantly, and know the symptoms of altitude sickness. Trekkers who arrive straight from sea level and rush the first day are the ones who get into trouble; fitness helps, but it does not replace acclimatisation.
Practical Tips
Pack for four seasons in one day: sun hat, sunglasses, and sunscreen for the intense high-altitude sun, plus warm layers, a warm hat, and a waterproof shell. Nights at 4,250 m are well below freezing, so a proper sleeping bag is essential — budget operators sometimes supply thin ones, so consider bringing or renting your own. Bring cash, toilet paper, hand sanitiser, a headlamp, and a water bottle; on guided treks the cook crew generally boils river water for drinking each evening. Download offline maps if walking independently, and carry a little extra food for the pass day, which is long and exposed.
Arjun Mehta is the pen name behind Mountains Bliss — practical mountain-travel guides with routes, costs, seasons and safety notes, researched from real trekker discussions and cross-checked before publishing. No sponsored posts, ever.
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