This was an “organized” ride that attempted to do all of the single track on San Pedro Ridge in one day.  There were around a 100 folks doing it.  I rode with Handsome Jeff on our single speeds.  We did accidentally cut off around 5 miles and 500 feet of climbing at the end, but both of us agreed that we could live with that.  I came away with some bruised ribs and a couple of scrapes here and there from an “ass over teakettle” fall.  The last 15 miles were quite difficult since it hurt quite a bit to pull up on the handlebars and when I hit bumps.  Here is a link to the course.