I often let hills beat me before I even get my butt on the bike( mostly becuase i live in a VERY flat area)! Just go for it. You may be suprised. Who cares if you walk it. When I feel bad about how slow I am or how many hills I walked, I talk to my non riding sister. She is always amazed at the distance alone. I have never even completed a century. She makes me feel like superwoman. Ya know what? I am and so are you!!!!!