I'm 60, live and ride at sea level, flew to CO one day and did a century the next day with 12,500' of climbing topping out at 9000' above sea level. My avg speed was 14 mph. I'm not blowing my horn and am not anything special when it come to riding. I just post this to illustrate that I think some are making a much bigger deal out of it than it deserves. They way you accomplish stuff like this is by going and trying, not by sitting in front of a computer endlessly hashing over inconsequential minutia. And if at first you don't succeed, try again. Sheesh...
