It has been freezing at night in Flagstaff for the past 10 days.
This morning I went on a 14km run with -3C. Blue skies though.
I did 1 14km run before, in the summer. I'm planning to do it more often: every time running is scheduled for a Sunday and the distance is the longest in my schedule (6, 8, 10km) So, once about every 3 weeks.