When to go
The best months for hiking are Mar-Apr, when autumn foliage is stunning. Many hikers also visit in summer – Dec-Jan - along with non-trekkers so it can be very busy at that time. Days are long and mild then but it can be windy, as in spring (Sep-Oct). In the winter months Jun-Aug it is very cold and access routes can be blocked by snow, and facilities closed.
Getting local currency
Argentine Peso. Bring sufficient pesos for your needs from a previous larger destination.
GMT -3 hours. Sometimes daylight saving is observed in the summer, but this is announced ad hoc on a year-on-year basis.
Daily flights from Buenos Aires take 3.5hrs to El Calafate, thence it is 3hrs by road to El Chaltén; from Ushuaia the flight to El Calafate is 1.5hrs.
El Calafate in the southern sector of the park, to visit the Perito Moreno glacier, 215 km (3-4hs); Tierra del Fuego for visit to Lapataia National Park and Beagle Channel (flight from El Calafate 1.5hrs); via El Calafate to Torres del Paine National Park, Chile, 425 km, (7hrs scenic drive).