Runners perspective: sidewalk sucks for running. For one, they are not exactly common in my town...Most that we do have are in horrible disrepair, completely unsafe to run on if it’s near dark. Also, they are too firm and in my experience result in more joint pain and increase chances of repetitive stress type injuries.
Still, I completely sympathize with the OP on this one. Every time a car or cyclist comes to pass me (not super common, because of the time of day I’m out) I move as close to the curb as I can. I see other runners/walkers who feel like they can claim the center of the road and other traffic should just “figure it out”. What I’ve noticed is 99.9% of drivers/cyclists are happy to give you a wide berth when you show them a little respect and move to the curb.