For better or for worse there are
almost none of these paths where I live except for a small .25 mile one but I won’t ride it if I see any signs of pedestrians on it. It’s not wide enough so that unless they are walking towards you won’t get safely past them. I was in Ohio over the summer and they have a 300 mile mup system that unties the entire state. While I didn’t have time to ride it it’s mostly used by cyclists apparently. It was a system of old train railways.