I took 15 of the longest tours, from winter 2009/2010 and worked out the total ascent and descent. If i was to total all the tours from the winter, I think i would be pretty close to 50,000 vertical feet of descent?
Total Ascent: 9,406 Meters (30,859 Feet)
Total Descent: 8,841 Meters (29,005 feet)
If i'm going to achieve my goal of 100,000 vertical feet of descent next winter. I'll really need to step my game up and average about 5,000 vertical feet a day.