My sister lives at sea level -- Baltimore and Chicago. She is coming to visit me in Denver (5280 ft or 1600m). She wishes to climb Mt Bierstadt (14,065 ft or 4200m) the same day she arrives. I have ...
This summer I'm planning to mount my first 4000 m mountain in Switzerland. So far I only got around 3300 meters while hiking and had no problems. However 4000 meter an above is definitively a ...