one of the other riders was wondering the same thing. I was surprised when I got out of the wet packed sand area and into the mud- until later when we were standing around in between looking for markers and one guy remarked that they'd had quite a downpour during the night. This area is quite a bit south of me, and is a big area for ATV and motorbike riding (those trails are separate from the horse trails we were on).
It seemed like a very large turnout (I've only been on one other organized ride- a road ride), but only about 8 of us on the mountain bike part.
vickie