I have only done New York. And if someone were to ask me about it on an elevator, I'd say "The biggest race in the world. A chance to run through all 5 boroughs of New York City. The loudest, most electric of all majors with people on the streets, cheering the whole way. But also tough and hilly."
Curious to know how people would sum up the others? Thought it would be cool to have some very simple narratives about each one.