Torres del Paine National Park, located in Chilean Patagonia, is a world-renowned trekking destination famed for its towering granite peaks, turquoise glaciers, and diverse wildlife. Access typically involves travel to Puerto Natales (Chile) and then by bus to the park, with internal shuttles and catamarans connecting trailheads. While experienced hikers can undertake self-guided adventures like the popular W Trek (4-5 days) or the more challenging O Circuit (7-10 days), guided tours are highly recommended for less experienced visitors or those preferring organized logistics and expert insights. The park is generally open year-round, though the peak season (November-March) offers the best weather and full services, while the shoulder and low seasons (April-October) present colder conditions, limited services, and potential trail closures, requiring advanced preparation. Costs vary significantly, from several hundred to over a thousand USD for a multi-day trek, depending on accommodation choices (camping vs. refugios/hotels), transport, food, and whether a tour is booked, plus an international visitor entrance fee (approx. $35-49 USD, valid for 3 days). Expect highly unpredictable Patagonian weather and always book accommodations and park entry well in advance, particularly for peak season, to ensure availability.