Back to my 5-mile runs

I ran my 5-mile route on the Jordan River Parkway. I felt pretty energetic when I got up (wakeup HR was 51) and during my stretches, but the heat got to me and it took me over 2 miles to warm up. During that time, my pace was around 11:30. On the way back, my pace was down to 10:30 - 11:00. The shade temperature when I left home was in the low 70s (F), and it was 88 (F) when I returned.