Looks like Boston got knocked off its top spot, walkability-wise, according to this article on the new Brookings Institute report.
Boston ranked second, ahead of San Francisco, Denver, and Portland, Ore.
The response from Boston officials was confusion, then indignation. (Some noted that Brookings is based in Washington. Coincidence?)
Other cities may be more walkable, but I'd be willing to bet more people walk in Boston than in other cities. Why? If you've ever driven in Boston, you wouldn't have to ask, trust me!