Originally Posted by
eja_ bottecchia
How old are you and how steep are your hills?
I'm 68.5 y/o. Last week's organized ride, the portion I did, was 75 miles, 5800' of climbing half of which was in a single climb a good deal of which is in excess of 10%. I can do 10% with a 39-28, but I can't do that much climbing without lower gearing. FWIW, I'm 6', 188 lbs so I'm no flyweight.