I wanted to do 20 early Saturday, but woke up to flash floods and lightening storms from 4am-10am. No run. wedding at 11:30 then to Aly's last performance. Great day, just no run. Home about 9 pm so I moved my long run to Sunday between church services with no time to spare. Side effect was I had to do some heat training. Afternoon run, 81º and moderate humidity. Steady wind for some resistance too. All seemed to start fine and I did not push anything early. No need to crash and burn on a hot and sunny day. Ran 10 out and threw in a few half marathon pace miles. I did not bring fuel, but had plenty of water, chia fresca and emergen-c. Around mile 16 the heat just hit me all at once. Needed to stop multiple times for drinks and slowed down the pace down to high 9's. Miserable last 2 miles as I stopped at 19. Looks like I need more heat training. Glad to get the miles in, but I felt sick for about an hour and a half after.