Speaking of ear buds - am I the only one running without music? I mean, I see people at races with ear plugs playing music!?
It is super annoying if you share a trail either on foot or on the bike. The person you want to pass has no clue you are coming. You can yell at them, ring your bell etc. Once I pass them with the dog a few inches away, they often jump 3 feet to the side because they are startled. It is enjoyable to watch that.
G