I'd likely be shot at the getgo upon my refusal to take part in such a silly practice.
If I were to actually take part, I'd bring along a music player and lots of classical music. When I tired of that, I'd likely just stop and get shot. I'm not much for imposed competitions.
I certainly wouldn't be one of the people that did well. I tend to push myself physically in anything I do, and thus I would outpace them, but tire much sooner.