I'm just linking to @posnerk 's blog, The Long Brown Path, where he posts about his recent barefoot United Airlines New York City Half-Marathon, as well as his recent Dallas, TX race (he's now working in Dallas and commuting back and forth to New York). He says he's writing more about his barefoot New York Catskill mountain-trail climbs. You can also buy some of his books about his New York/New Jersey trail hikes, many of which were barefoot. I hope Ken Posner doesn't mind my posting the links here. https://thelongbrownpath.com/2019/03/20/unite-airlines-nyc-1-2-marathon/ https://thelongbrownpath.com/2019/02/15/random-notes-from-dallas/ I also have enjoyed many of his blog posts, especially his philosophical ones.