Originally Posted by patentcad

I hear you about the altitude, I've skied in the Rockies enough to have had a week of altitude sickness; even when you feel ok you feel how thin the air gets above 7000 feet, I'm sure you feel it on a bicycle at lower altitudes. But how bad vertical feet kicks you is impacted by the type of climbing for sure. Easier to ride 4 miles up a climb with an average grade of 5-6% than 1 mile up a hill with a grade of 8% plus with steeper ramps, at least in my experience with those different climbs.