I've been a runner for a long time and this is absolutely a thing, it's not just you. Running do over an hour gets boring unless you're trail running and have different scenery to look forward to. That being said, a lot of people get bored (or worse, are actively displeased) much quicker and can't even run without music to entertain them.
I run without any noise and sometimes I do when the track goes through a nice forest or so. But for anything longer than 3 - 5 km there is gladly no shortage of music-playlists, podcasts or audio books to choose from.
>>Running do over an hour gets boring unless you're trail running and have different scenery to look forward to.
As somebody into heavy hands walking this is precisely my problem. Urban walking gets boring and tedious quickly.
Most people who enjoy these activities are basically looking forward to spending some time in solitude walking in natural spaces where there is much green, sunlight, wind and some scenery to relish.