Trekhawk--SadieKate and I have at times discussed the whole randonneur/brevet approach to doing long distances on your own. SK knows way more about this than I do, so maybe she can chime in. But check out the FAQs on the Randonneurs USA
page.
Any century on your own up there where you live would also include a whole lot of climbing. I'm pretty sure there is a brevet or two in the valley not too far from you. Again, I defer to SK.
And LadyJai...my gawd, woman, you ROCK! I agree with what Trek said: :eek: :p