Sounds A LOT more like a goofy prank than anything else.
Also, it sure is noticeable how many of the (presumably) female posters make comments here equating being an older man with being some sort of predator, 'creeper' being the word used several times. Maybe give that a thought the next time you consider the world unkind and dangerous. You get what you give.
This really has me wondering WTF is wrong with some of you. You think it's OK to see every older male out there as a predator? Even the way OP described the other runner at the track was dismissive and unkind.