i was out there for a dawn patrol ride this morning. it was frozen solid at 7am... thing is the spots that were starting to get sun by the end of my ride were already looking like they were softening up, and that was around 9am. temps were in the 20s overnight, so it had many hours to freeze. i'm sure by now its too soft. early bird gets the worm.
i did note lots of deep frozen ruts and lots of trail widening due to people riding in muddy conditions, especially on the small loop(s) right across the street from the newman's lane parking lot - which sucks.