Just to tag onto this thought the current winner of the California Triple Crown did it on a recumbent. Those not familiar with the race it is a road race title that is the compilation of three 200 mile races that all average around the 20,000 ft climbing range. LOL, This win confused the race officials so much they checked his bike for a motor. Even though they didn't find a motor they denied him the title because they felt a recumbent gave him an unfair advantage. I believe this is the first time in history a recumbent has been ruled to have a climbing advantage over an upright bike by race officials. Weeks later the director wisely reconsidered and reversed the decision giving Jason Perez the 2016 California Triple Crown win.