• Distance: 51 km
• Duration: Three to four days
• Start and end point: Villa Cerro Castillo
• Difficulty: Moderate-strenuous

Located in the heart of Aysen Patagonia, this jagged mountain peak is getting more attention from hikers and is said to be the "next Torres del Paine" just without the crowds.

There are two main hiking routes in Cerro Castillo, a single day hike to the meltwater lake of Laguna Castillo, or the Cerro Castillo Circuit (aka Cerro Castillo Traverse), a roughly 50km trek that takes around three to four days of backpacking.

Both routes offer constant views of Cerro Castillo and its glaciers. There are panoramic views of the Turbio River and the Ibáñez River and you can even spot huemules, a native deer-like animal hidden in the trees along the path. Whichever option you choose, it’s worth going with a guide.

The full route is moderate to challenging, with some steep ascents and descents, and it is often compared to the more famous W-trek in Torres del Paine National Park, but with fewer crowds.

The trail takes you through diverse landscapes, including old-growth forests, rivers, glacial lakes, and vast moraines. One of the main highlights is the view of Cerro Castillo's glaciated peak, particularly stunning from the vantage point of the glacial lake at the base of the mountain.

The trek involves a combination of camping and hiking, with designated campsites along the route. These campsites are basic and do not offer amenities like food or gear rental, so hikers need to be fully self-sufficient and carry all necessary equipment and supplies.

The trail is relatively well-marked, but it's still recommended to carry a map and compass (and know how to use them). Always register with park authorities before starting the trek, and let someone know your plans.