If you don’t know what Festivus is at this juncture, stop reading this post and quickly go watch the Youtube clip below (or the whole episode, S9E10) from Seinfeld to get up to speed. I’ll wait. OK, so how does this translate into a 5K run on Saturday, December 23, 2023 in Salem, OR? There’s a lot going on here, but basically the race website lists the following: The Festivus activities, if you know anything…