The list in rank order: 1.NYC, 2. San Francisco, 3. Boston,  4. Miami, 5. Philly, 6. Chicago, 7. Washington DC, 8. Seattle, 9. Oakland, 10. Long Beach CA. Of course, if you choose to do your strolling after dark, those cities’ sidewalks may not be so friendly. Be a smart senior, make sure you do your nightly hikes in well-lighted, busy streets and parks, preferably with at least one younger companion. www.usatoday.com/picture-gallery/travel/destinations/2019/08/12/walkable-cities-u-s-including-new-york-san-francisco-boston