Boredom while running

So many people say they get ‘bored’ when they run. (Could running be used as an experimental ‘boredom’ manipulation?) But what about people who do enjoy running? Perhaps its because they are running with other people or they are listening to music. But if they are running alone and without music, perhaps they are unintentionally engaging in some type of mindfulness practice e.g. a type ‘mindfulness of body/nature’?