Can I do this without a guide?

Yes. Both the trails in El Chaltén and the W Trek in Torres del Paine are well-marked and highly trafficked. You only need a guide if you plan to do technical glacier trekking.

When is the best time to go?

Late November through early March is peak season. You get the most daylight, but you also deal with the legendary high winds.

Planning a 2-Week Patagonia Expedition

To see both the Argentine and Chilean sides of Patagonia in two weeks, you must prioritize regional flights over buses to save time. Focus your energy on two main hubs: El Chaltén for hiking and Torres del Paine for the iconic W Trek.

Book your regional flights early. Do not attempt to bus from El Calafate to Puerto Natales unless you have extra days. Fly into El Calafate (FTE) and out of Puerto Natales (PNT) or Punta Arenas (PUQ) to avoid backtracking.
Secure your park permits. Torres del Paine requires campsite reservations months in advance if you plan to do the W or O trek. Use the Las Torres or Vertice websites to book these before you touch your plane tickets.
Pack for four seasons. Patagonia weather changes every 20 minutes. Layering is not a suggestion; it is a survival requirement. Ensure every item is waterproof, not just water-resistant.
Plan your transit days. Assume one full day of travel for each crossing between major parks. Factor in the bus border crossing between Argentina and Chile, which can take 6–8 hours total.

Can I do this without a guide?: Yes. Both the trails in El Chaltén and the W Trek in Torres del Paine are well-marked and highly trafficked. You only need a guide if you plan to do technical glacier trekking.
When is the best time to go?: Late November through early March is peak season. You get the most daylight, but you also deal with the legendary high winds.