It was hot and sweaty this evening. 5 pm it was 86 F. I ran alone trying to maintain a reasonable pace and heart rate. I ran without water. This became a problem during mile 4. I was gagging on nothing so stopped and walk for about 45 seconds. I was fine then. I still couldn't cool down though. My heart rate stay up because I was hot. Suddenly it rained huge drops for 60 seconds! I was still hot. A bit of water down the gullet might have allowed me to run slightly faster.
All in all I finished with an 8:31/mi pace for almost 7 miles in the heat. Not too bad.