Walk pages now tell search engines who is leading and that the event is free, so they can list it as a proper event rather than a bare page. Addresses that are not a real public page return not found. Copies such as /home, object-id walk links, social events filed under walks, and format-export variants are pointed at the official address or asked not to be indexed, and the sitemap only lists pages with a public slug.
/home and object-id walk addresses go to the proper address?format=html, markdown or json) are not indexed