I was in Portland, OR earlier this week and was honestly a bit jealous how great a biking city it was (minus the amount of rain they get maybe). They have tons of great bike routes, great bike lanes sometimes separated from traffic or given an entire lane, etc. They also have a lot of great bike shops (I visited a few to get some new gear tax free).
I then saw an Article on the Copenhagenize index, which in 2013 only had one North American city - Montreal.
in 2011 Portland and San Francisco both made the list as well as New York.
Finally I saw this article declaring San Francisco as the most bike friendly city in the US - though this article seems very flawed as it is based entirely on bike facilities (lanes, paths, routes) per square mile. Some commenters on the article thought the same.
I live near San Francisco, and commute into San Francisco by bike, and while its pretty good, I would not rate it above Portland from what I saw for a variety of reasons.
This got me thinking - how would you all rate your city or area for biking? Are there cities in the US that you think are better then where you live?