As we were on the bus from Merida to Campeche, we started noticing both individual and groups of cyclists along the shoulders of the road. Some of them carried flags, posters, lights, and lots of other gear. We had no idea what this was all about at the time, but knew it had to be something other than random chance.
Here are two of the beautiful churches we saw in Campeche. I suspect that the second one, the large cathedral, was where the pilgrims were headed for the fiesta.