Prevention magazine had an article recently on America's 12 best walking cities. Along with general livability issues such as crimes rates and air quality, key issues included destinations to walk TO as well as pedestrian access to mass transit. It's not enough just to have sidewalks and parks!
The top 12 was based on rankings in conjunction with the American Podiatric Medical Association, which has a list of the top 125 cities in order. Tops on the list: New York, followed closely by San Diego. Surprising third: Jersey City. Boston ranked #7. Other area cities on the list: Providence #20, Worcester #35, Springfield #85.