Huascarán National Park is one of those places that genuinely stops you in your tracks. Covering nearly 340,000 hectares of the Cordillera Blanca in Ancash, it holds the highest tropical mountain on Earth — Huascarán itself, at 6,768 metres — along with dozens of other glaciated peaks that reflect hard white light into impossibly blue glacial lakes.
The scale here is different from anything you'll find in the neighbouring Cordillera Huayhuash to the south; the valleys are broader, the infrastructure is more developed, and the sheer density of accessible trailheads makes it a genuine base for weeks of exploration rather than a single circuit.
The most popular entry point is Huaraz, a compact and well-organised town roughly eight hours north of Lima by overnight bus. From here, colectivos and taxis run up into side valleys like the Llanganuco, Quilcayhuanca, and Santa Cruz, each offering its own character.
The Santa Cruz Trek — a four-day crossing over the Punta Unión pass at around 4,750 metres — is the classic route, rewarding you with views of Alpamayo and Artesonraju and the chance to spot Andean condors riding thermals above the ridgelines. Viscachas, vizcachas, and white-tailed deer are common at lower elevations, while the queñual forests of native Polylepis trees add warm rust colour to the high treeline.
Entry fees apply at each valley access point and are paid in cash; rangers are present at most trailheads. The park requires no special trekking permit for standard routes, though climbers need to arrange permits through the park administration in Huaraz.
The dry season, May through September, is the only reliable window for high-altitude trekking — come any other time and persistent snow, cloud, and flooded trails will work against you.