OP, tomorrow I'm going to be cycling to Eldo from Boulder, running through the park to the canyon trail, hitting the top and then dropping down to south Boulder creek on the walker loop. It's going to be a high of 55 with little wind, the trails will be almost completely free of ice so no spikes needed, I'm probably going to see no more than 8 people on the trail, and I won't even need a shirt on the run. Let me know if you want to join, it might give you a different take on what's out here.
No doubt this winter has been a solid one and the wind can be a drag, but there definitely are good days to get out, even during the winter.