25 mph up a hill is fast, but the tour de France is a silly comparison, they sustain those speeds for 4 hours at a time, commuters aren't going to do that. Commuters also rarely face anything resembling the climbs in the tour.
True but on the other side most commuters aren't going for speed, or using great bikes, or proper shoes so I think the expectation would be that the tour de france winner would still average a much faster time than a commuter.
> Most cyclists have no trouble traveling at a speed greater than 25mph, even uphill.
The average speed of the tour de france winners now is only about 25mph and that is very heavily drug assisted;)
http://bikeraceinfo.com/tdf/tdfstats.html
Given this I can't really take your statement as a serious one:)