The people that run think bicycling is too hard and we're crazy. Except for the ones who do both, they are really crazy.

I've tried to like jogging. I'll do it in the winter when the roads are bad and the days are short and nights are dark. And I'll run when I don't have the time to ride. I've worked up to doing 5ks. But I never got into it enough that my conditioning made it "easy". That is, like the OP said, it's a much harder effort, relatively.