I ran for two hours, averaging about a 12:30 pace, on the Jordan River Parkway, and I felt pretty good. My wakeup HR was 51, and I had a good sleep last night, plus a short nap before I went out running about 1:30 pm. I had breakfast about three hours before I left for my run (four or five hours would be better), and I had an e-Gel packet just before I left my car for the run and another one after an hour at my turn-around point.
The temperature was in the mid 40s (F) during my run, although the temp was lower when I finished because the sun was setting when I drove in my driveway. The sky was relatively free of clouds, and it was a great day to be out.