In the late afternoon (the sun was going down when I left home) I ran/walked for 60 minutes and did 3.25 miles. Because it was late when I started my run, I didn't drive to the Jordan River Parkway. Instead I ran about a mile along a canal trail and then continued the run through various neighborhoods, arriving home about 15 minutes after it got dark. It was too dark to see the distance and time numbers on my GPS, and I had to stop under street lights to check the numbers.
The temperature was in the high 30s (F) when I left, and it got a few degrees below freezing while I was running. I felt fine during the run and had a reasonable energy-level.