SAFD: No music, no podcasts or audiobooks while running. If I have to run on a Treadmill, I will watch a show.
When I first started to run, I would listen to music, but then I joined a running group that was split into pace groups and we would talk the entire long run - so no headphones. It was great. I got used to nothing even when I did some of my runs on my own. Since COVID our running group has changed, and I switched to run/walk a year and a half ago. I still meet people to start a run, but generally run by myself. Still no music. I don’t really think about a lot, usually just the next mile, where the next turn is, watch for traffic. I don’t know how or why, but it works for me and is not boring, and time goes by.