Fuel EX 9.8. Mostly sunny, cold - 11 at the start up to 14 at the end, windchill around zero, fairly stiff South winds @10-12 mph. Lots of people out today, I saw 8 other riders on the trails, several hikers and trail runners, plus 4 shaggy deer. The trails were in great shape compared to Wednesday, really a well packed and worn in surface with some ice which was no problem with the studs. Started with the lower West loop, then the Purple trail up to the upper loop and Purple trail through the prickly prairie. I started on the last North section but had to bail out as it wasn't as packed as the rest and my skinny MTB tires didn't cut it - even a couple of fat tire bikes ahead of me were having a hard time. Return to signpost 13 to do the South section of the upper loop then a full loop of the lower loop, back up on the Purple trail and then South again on the lower loop. I love the Pogies - hands were really warm the whole trip even with light gloves on.