Canadian here, from the wet coast. I've run in the rain before, but it needs to be monsoon level before that's necessary. Anything less is just meh.

It really depends on what rain is like in your location in my limited experience. In the pacific northwest rain is usually a drizzle, it's fine, you don't run. In the american Midwest, you get a feel for the air pressure, listen for thunder, and look at the sky, then you make a comment about your prediction and keep going if you predict a drizzle but start running if it seems like a downpour.

that's a new level of crazy!!!

just kidding, I remember doing that as a kid... fond memories