my son and his fiancee are getting married in early April and plan to honeymoon in colorado. AS none of us has ever been to Colorado, they are unsure of where to go, where to stay and so on. They picked Colorado because they are both avid hikers and climbers and read somewhere that the most fit people live in Colorado! They plan to fly from California to Denver, and then have between a week or two to spend. They seem to be particularly impressed with the Boulder area (I guess the fittest of the fit live there, I dunno!) Anyway, can some of you CO experts suggest an itinerary and/or places to stay which would include hiking? They will have a rented car, but I am wondering about driving at the higher elevations in early April? Thank you- any suggestions/advice appreciated.