The Santa Cruz Trek is the most walked multi-day route in Peru’s Cordillera Blanca, and for good reason: in four days it packs glacial valleys, turquoise lakes and one of the finest high passes in the Andes into about 50 kilometres. It runs through Huascarán National Park, between the trailheads of Cashapampa and Vaquería, with the 4,750-metre Punta Union Pass as its centrepiece. Unlike the Inca Trail, it needs no months-ahead permit, and it doubles as the classic acclimatisation trek for bigger objectives in the range.
This is a camping trek — there are no teahouses or lodges on the route — but donkeys and arrieros (mule drivers) are the norm on guided versions, so you walk with only a daypack. Independent trekkers carry everything themselves, which is very doable if you are used to backpacking at altitude. Either way, almost the entire route sits above 3,500 metres, so the planning starts before you leave Huaraz.
The route
The standard itinerary runs 4 days and 3 nights, most commonly walked from Cashapampa to Vaquería. Day one climbs from Cashapampa (2,900 m) up the Santa Cruz valley to the Llamacorral campsite at 3,760 m — roughly 4 to 5 hours. Day two is the long valley day: past the lakes Ichiccocha and Jatuncocha, with Alpamayo’s perfect pyramid dominating the view, to the Taullipampa base camp beneath Punta Union. Day three crosses the Punta Union Pass at 4,750 m — the high point and the hardest single day — then descends into the Huaripampa valley. Day four walks out through Quechua farming country to Vaquería, from where transport returns you to Huaraz via Yungay.
Some itineraries run the reverse, and 5-day versions exist that add a rest or exploration day at Taullipampa. A popular add-on is the Laguna 69 side trip from the Llanganuco valley, often done as an acclimatisation day hike from Huaraz before the trek.
Getting there and acclimatisation
Everything starts in Huaraz (3,090 m), the trekking capital of the Cordillera Blanca, reached from Lima by overnight bus or a short flight. Plan at least two or three nights in Huaraz before the trek: the standard advice, repeated across trekker reports, is to do acclimatisation day hikes — Laguna 69 (4,600 m), Lake Churup (4,450 m) or Pastoruri glacier — before sleeping high on the trail. Altitude is the main reason people struggle on day two and the pass day.
To reach the trailheads, take a colectivo (shared minibus) from Huaraz toward Yungay or Caraz, then a second colectivo onward to Cashapampa or Vaquería; each leg typically costs in the region of 8 to 30 soles, and hitchhiking is widely reported to work well in the area. Guided treks include private transport.
When to go
The dry season — roughly May to September, with April and October as shoulder months — is the window. Days at camp are typically 13 to 23°C with strong sun; nights drop to around minus 4 to minus 6°C, so a proper cold-weather sleeping bag matters. The wet season brings rain, mud and cloud that hides the peaks.
Costs and budgeting
Going independently, one detailed trekker budget puts the whole 4-day trek at around 230 soles per person (roughly US$60), assuming you already own the camping gear — covering food, transport, a night in Huaraz and the national park entrance fee. Huascarán National Park charges an entrance fee for the trek; the amount is set locally and has changed over the years, so confirm the current figure in Huaraz rather than relying on old blog posts.
Guided 4-day group treks booked in Huaraz or online are commonly listed between about US$390 and US$460 per person, including transport, guide, cook, donkeys, tents, sleeping gear and meals. Private treks cost more. Donkey support is the great equaliser here: on guided treks the animals carry the heavy gear and you walk with a daypack.
Altitude and safety
Punta Union at 4,750 m is serious altitude with roughly half of sea-level oxygen, and the pass day combines the highest sleeping camps of the trek with the biggest single climb. Walk slowly on the ascent, drink plenty of water, and know the drill: headache, nausea or unusual fatigue mean you stop ascending, and if symptoms worsen you descend. Nights are cold and campsites are basic — shared, sometimes with livestock about — so bring warm layers and a headlamp. The trail itself is well trodden and straightforward to follow, but weather above 4,000 metres can turn fast; a rain shell and warm layer belong in your daypack every day.
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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