Strenuous trek
High-altitude scramble with occasional snow patches
Long days, altitude, maybe scrambling — still non-technical.
1–2 days
Fee / registration
National-park registration and small fee at the Paso de Cortés ranger station.
Amecameca
Crowds: medium · most parties climb guided
Dry season (November–February) for stable, clear, cold conditions — the same window as Orizaba, which it traditionally precedes as an acclimatisation climb.
Izta's standard La Arista del Sol route traverses the mythical sleeping woman's knees, belly, and breast — a long scramble over 5,000 m with big views of smoking Popocatépetl across the pass. There is little technical difficulty in season, but the route is long, high, and easy to underestimate; many parties overnight at the Grupo de los Cien hut. It is the natural first act of a Mexican volcanoes trip.
The highest summit in the contiguous US — a bucket-list trail day of 22 miles and 1,900 m of gain.
North America's third summit — a winter-season glacier climb with unbeatable acclimatisation value per dollar.
America's glacier school — the most heavily glaciated peak in the lower 48 and the classic Denali tune-up.