I can get up 4,000 veritcal feet and back down the other side. I found that out when I ran a half marathon 2 weeks ago. The last mile killed me because I was so beat. What was I thinking? I must have been phycologically misplaced when I made the decision to do a 13 mile race up and down a mountian without my dirtbike! I think I'll ride it to the last mile next year and run the rest!:p