Pros: Home to many cycling pros, all levels of cycling.
Cons: High altitude, good luck keeping up on the local training ride.

Boulder is where the pros live and train, thanks to the high-altitude setting and laid-back atmosphere. It's also home to the Morgul-Bismark loop, which featured in American Flyers, as well as the Coors International Cycling Classic. Colorado played a large role in the early days of both American road racing and the birth of mountain biking, so it should come as no surprise that cycling remains a priority today.