I think my town, Kalamazoo, MI., is very bike friendly. I have put together a ride I refer to as the "Metro Metric" which is a metric century comprised of more than 55 miles of dedicated bike infrastructure. The trails and bike lanes are much longer than that and are actually useful for commuting and utility use. The local authorities throughout the county have begun meeting on a regular basis to coordinate the development of more bike facilities as they resurface and service roads in the area. For a county of less than 1/2 million people it has become the easiest place to cycle that I have lived in during the past 40 years.
Marc