When we travel to Bolivia, the first stop is Aeropuerto El Alto. Flights from the U.S. land in the early morning and during the winter one can expect the temperature to be about freezing; if you arrive in the summer, expect temperatures to be about freezing. The airport sits at an altitude of just over 4,000 meters (13,000ft+). That places travelers at an altitude just about 1,000 feet lower than the highest mountains in the continental US. Altitude sickness (soroche) is common and visitors from sea level can be identified by their pale faces and bluish lips. But, after you get through customs, there are the mountains of the Cordillera Real range to greet you rising to over 6,000 meters, Illimani has a greater elevation than any mountain in North America at over 21,000 feet.