I'm going to be in and around Denver next week doing a bit of reconnaissance (I hate where I live and I'm thinking of moving). While I'm there, I'd like to ride a road bike up a hill. The thing is, I've been living in south Florida for 3 1/2 years and I've lost all of my climbing ability. Where are some good climbs near Denver that aren't too challenging? I'll be staying in Aurora but don't mind doing a bit of driving. Also, any recommendations on a cheap place to rent a road bike for a day?