I am visiting Arizona on the first week of May and am hoping to ride one of the big climbs there---either Mount Lemmon or Mount Graham. My wife will be with me so I will only have time for one ride!
My question: I am worried about the altitude of these climbs--around 9000'.
Being a flatlander living in Ontario, Canada I'm not sure it is a good idea to ride so high without acclimatization. The highest I have ever climbed is Whiteface Mountain in NY--about 4500'. I want to climb something while in Arizona--how about Kitt's Peak if the "Big Two" are out?

Thanks in advance
Brendan O'Sullivan
Mississauga
Ontario