Even though my wakeup HR was down to 46, and I felt pretty good, I could tell I was still tired from my run on Saturday. After a little more than 2 miles, I turned around. My total run was about 4 1/4 miles, and my pace varied from 11:00 to 11:40.
When I left home, the shade temperature was in the mid 70s (F), and when I returned it was in the mid 80s (F). That is shade temperature, and the Jordan River Parkway doesn't have much shade. The sun temperature was probably 100 (F). Unfortunately, I didn't bring water with me, and I was pretty thirsty when I finished.