I know a guy who claims he made it up a brutal 2 mile climb that rises 1000 feet in 8 minutes. That's 15 miles an hour. I'm not sure what the gradient is, but while some parts of the climb aren't so bad (3% or whatever), some parts are incredibly steep. I have a hybrid and I'm only just getting into riding, so to me that sounds like a superhuman feat, but I know we have some rather good cyclists here...is that even possible?