In acknowledgment of the growing importance of cycling as a means of transportation and of the value of bikeability for communities, Walk Score has launched a version of Bike Score, which seeks to measure the bike-friendliness of a city. 

Bike Score calculates a 0-100 rating of the bikeability of a location based on four equally weighted components:

• Bike lanes
• Hills
• Destinations and road connectivity
• Bike commuting mode share

The Bike Score for a city is then calculated by applying the Bike Score algorithm block-by-block throughout the city and weighting the scores by population density.   The result is a “heat map” for the city indicating relative bikeability.  Currently, Bike Score rates only ten U.S. cities: Minneapolis, Portland, San Francisco, Boston, Madison, Washington D.C., Seattle, Tucson, New York, and Chicago.

Bike Score was developed in collaboration with faculty at Simon Fraser University and the University of British Columbia under a grant from the Canadian Institutes of Health Research.