Well, I lived in the area for six years, and there are a number of good rides. One fabulous ride is from Loveland to Estes - it's a big hill - I have done it from Fort Collins to Estes through Masonville - excellent - and you can add Rist Canyon or not... This time of year, I'm not so sure I would do trail ridge road unless it was really really early on a weekday. I guess there is a great shuttle ride from Estes, up and over Trail Ridge to Granby (?) - could be wrong on the destination. I haven't ever done that ride. There are LOTS of pine-cone-pickers. That's what that road is intended for, and in my mind, someone watching an elk is not watching for a cyclist... When you mix tourists pulling trailers or driving motor homes they don't normally drive with cyclists, bad things can happen. Be careful! Call local bike shops. There are good rides out there. There are fast rides around Fort Collins and Loveland that may be safer than riding up in Estes. Definitely bring the bike! It's a huge biking community here, and you'll have fun and meet good humans if you have a bike to tool around on