December through February offers the warmest, most stable weather for hiking, though expect crowds and book ahead. March to May and September to November are shoulder seasons with decent conditions and fewer tourists - many prefer the quieter experience. Winter months bring snow and shorter daylight, which limits options unless you're experienced in alpine conditions.

Multi-day expeditions like the 8-day ice field trips and 4-day treks around Fitz Roy fill quickly during peak season, so book 2-4 weeks in advance if you're visiting December to February. Off-season (March-November), a week or two is usually fine, but always check before you go since demand varies.

The drive takes roughly 3 hours. Many travellers book private transfers from El Calafate airport, which beats waiting for shuttle schedules or renting a car if you're tired after flying. You can also hire a private car for the return journey.

For multi-day hikes and technical ascents like Cerro Madsen, a guide is invaluable - they know the terrain, manage altitude safely, and share stories about the landscape. Self-guided day walks to Laguna de los Tres and around Fitz Roy are well-marked and popular enough that many do them independently, but a guide adds real insight.

Most 2-4 day hiking packages include a guide, accommodation (usually mountain refugios), and meals. Longer expeditions like the 8-day ice field trips add technical gear and expert mountaineering instruction. Check before you go with your tour operator about what's covered - logistics vary.

El Chaltén caters mainly to serious hikers and mountaineers, but shorter guided sunrise walks and 2-day treks work for fit families with older kids. Be honest about fitness levels - the terrain is steep, trails are rocky, and altitude can bite. If you're unsure, a guide who knows your ability is worth the cost.

Day hikes require standard trekking boots and pack, which most visitors bring or rent locally. Multi-day expeditions provide climbing gear, ice axes, and crampons - check before you go whether these are included or if there's a rental fee, as policies differ by operator.