My son and I went out today. It was fantastic. The ground was completely frozen. Though I could see a few ruts from when people rode when it was soft.
It was a really great ride. Someone needs to mark the trail as open on the train conditions tab. I checked that before riding and noted that the report was weeks old. Other trails were open with more recent reports.
Get out there before the snow flies, it is a tons of fun, super fast and actually pretty grippy. It's like you're riding on sandstone.
Corey