"Should we bring the camera?" Nick asks before we head out to the street to watch the marathon.
"OK, let's bring it," I say.
"Well, what are you going to do with pictures of people running?"
"OK, let's not bring it."
But, the moment I saw someone run by with a wig on, I ran back inside and grabbed the camera. If there were wigs, there'd probably be costumes. And there were. And many other non-traditional marathon sightings: activists, clowns, Mary lovers, and a generous helping of patriotism. We foreigners like to say "Only in Mexico" when we see the occasional oddity, but, really, I do believe marathons like this exist ONLY in Mexico.