Yesterday, I tried to ride in the Tour de Corn in Missouri. I was riding the 64.2 mile ride. THe heat was around 100 with a higher index. I made it 56 miles and had to give up. I really think I was hydrated enough, but it got to where I would have to pedal a while and then coast a while. I slso got to where I would have to stop every couple of miles and rest under a shade tree. The longest ride I have done so far was a 30, but there were a lot of hills and I thought it would be easy to do a sixty flat. How could I have trained to have been able to tolerate the heat?