I ran 16 miles today in 80-85 degree heat. I tried to keep my pace slow and ran pretty much alone the entire time. I did this so I wouldn’t be motivated to keep up with someone else. Then the last 4 miles we were supposed to pick up the pace to HalfMGP or MGP. I think I was able to do it. I left two guys behind as I ran my little butt off. My heartrate shows the increase.