Seattleites looking to hop on their bikes for National Bike to Work Week are in luck: The city ranks as the No. 1 bike city in the U.S. followed by Portland and San Francisco, according to a Zillow analysis.
To find the best bike cities, Zillow looked at the percent of commuters who bike to work, how long it takes to get to work on a bike, the number of Zillow rental listings that mention bicycle storage, and the miles of protected bike lanes in each city.
Source: http://www.zillow.com/blog/best-bike-cities-197490/